Measuring device system comprising two or more (FLOW) measuring devices

Abstract

The invention relates to a measuring device system comprising: a pressurised device for conducting and / or holding one or more (fluid) media; two (flow) measuring devices (M1) for measuring one or more measured variables, in particular a mass flow and / or a volume flow, of one or more media that are held in or conducted through the pressurised device; and at least two (flow) measuring devices (M1; M2), each comprising a measuring transducer (10.1; 10.2) fluidically connected to the pressurised device and (measuring device) electronics (20.1; 20.2) electrically connected to the measuring transducer, for measuring one or more measured variables of one or more media that are held in or conducted through the pressurised device. The (measuring device) electronics (20.1; 20.2) are each designed to operate, at least temporarily, in a corresponding operating mode (I.1; I.2) in which the electronics supply current to an excitation arrangement of the corresponding measuring transducer and receive and evaluate a measurement signal (s1.1; s1.2), supplied by a sensor arrangement of the corresponding measuring transducer, in order to determine measured values of the measured variable. Furthermore, the (measuring device) electronics (20.1) are designed, while the (measuring device) electronics (20.2) are operating in their operating mode (I.1), to operate, at least temporarily, in an operating mode (II.1; II.2) in which the electronics receive and evaluate the measurement signal (s1.1) in order to detect and / or quantify a disturbance () of the measuring device system, which disturbance is induced by means of the measuring transducer (10.2).

Description

[0001] Measuring system with two or more (flow) measuring devices

[0002] The invention relates to a measuring device system formed by means of a pressure device for guiding and / or holding one or more (fluid) measuring substances and by means of two or more (flow) measuring devices for measuring one or more measured quantities of one or more measuring substances held or guided in the pressure device, as well as a method for operating such a measuring device system.

[0003] In process engineering plants, such as filling or refueling systems or bioreactors, measuring systems are often used to determine one or more measured variables, such as mass flow and / or volume flow, of one or more (fluid) substances. These systems typically consist of two or more (independent) measuring devices, such as Coriolis flowmeters (CDMs) or magnetic-inductive flowmeters (MIDs). Examples of such measuring systems, which are formed by a first measuring device and at least one second (flow) measuring device and are used, for example, as part of a filling or refueling system, include...a also from EP-A 2613 126, US-A 2017 / 0199529, US-A 2002 / 0000259, US-A 2004 / 0141409, US-A 2010 / 0082168, US-A 2013 / 0061685, US-A 2013 / 0340519, WO-A 0058696, WO-A 02 / 097379, WO-A 2004017027, WO-A 2005005938, WO-A 2011 / 019344, WO-A 2013 / 006171, WO-A 2016 / 059132, WO-A known as 2017 / 143577, WO-A 2017 / 146717, WO-A 2019 / 245752, WO-A 2020 / 035589, WO-A 2020 / 186279 or WO-A 2021 / 206870.

[0004] Measuring instrument systems of the type in question comprise a system formed by means of one or more fluidically interconnected (process) lines, for example also for

[0005] A pressure vessel compliant with Directive 2014 / 68 / EU for conveying and / or holding one or more (fluid) substances, such as a gas, a liquid, or a dispersion, into which at least two (flow) measuring devices are integrated, for example, in such a way that the (flow) measuring devices are located in close proximity to each other and / or are fluidically connected to each other. Each of the aforementioned measuring devices has an (electrical-to-physical-to-electrical) sensor and (measuring device) electronics electrically connected to the respective sensor, typically formed by one or more microprocessors. The sensor of each measuring device is (fluidically) connected to the pressure vessel, in particular by means of a flange connection.namely, it is inserted into the course of a (process) line of the pressure vessel and is configured to be contacted by the respective medium being measured, for example, by being subjected to a flow of the medium at least temporarily. Each sensor also comprises both an excitation arrangement, formed, for example, by at least one electrical coil and / or at least one (electrodynamic or piezoelectric) vibration exciter, and a sensor arrangement, formed, for example, by at least one (electrodynamic or piezoelectric) vibration sensor. Both the excitation arrangement and the sensor arrangement are coupled to the respective (measuring instrument) electronics via a signal connection, for example, by being electrically connected to the (measuring instrument) electronics via a signal line.The excitation arrangement of each measuring device is configured to convert an supplied electrical (excitation) power into a mechanical (measuring) power suitable for producing a measurement effect dependent on the at least one measured quantity (of the sensor), for example, non-electrical and / or forced mechanical (useful) vibrations of the vibration element (actively) exciting, while the sensor arrangement of each measuring device is configured to detect a measurement effect dependent on the at least one measured quantity (of the measured material or the sensor), for example, (measured on the at least one measured quantity) mechanical vibrations of the sensor, and to convert it into a measurement signal representing the same measurement effect, such as the velocity of vibrational movements of the sensor, and to provide it to the respective (measuring device) electronics.The (measuring instrument) electronics are each configured (in normal measuring operation) to both energize the respective excitation arrangement, namely to feed an electrical driver signal, in the case of a Coriolis mass flow meter, for example, with a predefinable and / or an instantaneous (mechanical) resonance frequency of the respective sensor and / or a predefinable signal amplitude, into the respective excitation arrangement, such that at least one (physical) measuring effect dependent on the at least one measured quantity and detectable by the sensor arrangement is effected in the measured medium and that the respective measuring signal is at least partially dependent on the respective measuring effect, in particular, has a signal parameter dependent on the respective measured quantity, as well as to receive and evaluate the at least one measuring signal, in particularnamely to determine (using the at least one received measurement signal) the respective (digital) measured values ​​representing at least one measured quantity.

[0006] As discussed, among others, in the aforementioned US-A 2002 / 0000259, US-A 2013 / 0061685, WO-A 2021 / 206870 and WO-A 2004 / 017027, measuring instruments of measuring instrument systems of the type in question may be subject to disturbances generated externally during operation, in particular by another measuring instrument (of the measuring instrument system) adjacent to the measuring instrument, such that measured values ​​for the mass or volume flow rate deviate considerably from the actual mass or volume flow rate, possibly also accompanied by a comparatively high scatter, or that these measured values ​​exhibit a correspondingly high measurement error or correspondingly low reproducibility. Such disturbances or sources of interference causing them can, for example, be magnetic (interference) fields caused by one or more (adjacent) measuring devices and / or vibrations caused by one or more (adjacent) measuring devices and / or within the (measuring device system orPressure fluctuations may be established in the measuring medium flowing in the connected pressure device.

[0007] To reduce or prevent disturbances of the aforementioned type, US Patents 2002 / 0000259 and 2013 / 0061685, for example, propose operating the measuring instruments of the respective measuring system in a synchronized manner, such that at any given time (exactly) one of the measuring instruments is operating in the aforementioned measuring mode, while simultaneously one or more, for example, all other, adjacent measuring instruments or their excitation systems are switched off. A disadvantage of such a measure, in which one or more measuring instruments are temporarily switched off (sequentially) during operation of the measuring system, is, among other things, that this principle is only practically applicable to batches of substances that are only allowed to flow intermittently, for example, in measurements at a dosing station of a filling plant. This is particularly relevant in the aforementioned case where the measuring system uses two or more, for example, each as

[0008] Since the Coriolis flow meter is a vibronic measuring device, the measuring devices or the measuring device systems formed with them can alternatively be immunized against disturbances of the aforementioned type, for example, by, as also in the

[0009] WO-A 2021 / 206870 and WO-A 2004 / 017027, respectively, propose using sensors that exhibit different mechanical resonance frequencies (when measuring batches or partial flows of the same density). However, a disadvantage of this approach is not only that it is only applicable to measuring systems with vibronic instruments, but also that implementing each measuring system requires a correspondingly large number of different, and therefore very expensive, measuring devices. A further disadvantage of the aforementioned measures is that they do not allow for the detection or quantification of disturbances caused internally by the measuring system, for example, to reduce the system's susceptibility to interference through appropriate structural modifications within the plant.Starting from the aforementioned prior art, one object of the invention is to improve measuring instrument systems in such a way that any disturbances of the aforementioned type caused during the commissioning of the respective measuring instrument system can be detected, in particular, detected and evaluated with regard to their influence on the respective measuring accuracy; this is especially true when using the (standard) sensors established for conventional measuring instrument systems of the type in question, as well as while largely maintaining proven technologies and architectures of already established measuring instrument electronics.

[0010] To solve the problem, the invention consists of a measuring instrument system comprising:

[0011] • a pressure vessel for conveying and / or holding one or more (fluid) substances, for example a gas, a liquid or a dispersion, formed, for example by means of one or more fluidically connected (process) lines and / or compliant with Directive 2014 / 68 / EU;

[0012] • a first (flow) measuring device for measuring one or more measured quantities, for example a mass flow and / or a volume flow, of one or more measured substances held or guided in the pressure vessel;

[0013] • and at least one second (flow) measuring device, of the same type or design as the first measuring device, for measuring one or more measured quantities, for example a mass flow and / or a volume flow, of one or more measured substances held or guided in the pressure device;

[0014] • where each of the first and second measuring devices is respectively

[0015] comprising an (electrical-to-physical-to-electrical) sensor and (measuring instrument) electronics electrically connected to the same sensor, for example by means of one or more microprocessors;

[0016] • wherein the sensor of each of the first and second measuring devices is connected (fluidically) to the pressure vessel, for example by means of a flange connection, namely inserted into the course of a (process) line of the pressure vessel, and is set up to be contacted by the medium being measured, for example namely through which it flows,

[0017] • and wherein the measuring sensor of each of the first and second measuring devices has both an excitation arrangement, formed, for example, by means of at least one electrical coil and / or by means of at least one (electrodynamic or piezoelectric) vibration exciter, electrically connected to the (measuring device) electronics of the respective measuring device, and a sensor arrangement, formed, for example, by means of at least one (electrodynamic or piezoelectric) vibration sensor, signal-technically coupled to the (measuring device) electronics of the respective measuring device, for example, electrically connected;

[0018] • wherein the excitation arrangement of each of the first and second measuring devices is configured to convert the supplied electrical (excitation) power into mechanical (measuring) power that is useful for producing a measuring effect dependent on at least one measured quantity (of the sensor), for example, non-electrical and / or forced mechanical (useful) vibrations of the sensor,

[0019] • and wherein the sensor arrangement of each of the first and second measuring devices is configured to detect a measuring effect (of the measured material or of the measuring sensor) dependent on the at least one measured quantity, for example, mechanical vibrations of the measuring sensor (dependent on the at least one measured quantity), and to convert it into a (first) measuring signal representing the same measuring effect, for example, a velocity of vibrational movements of the measuring sensor;

[0020] • wherein the (measuring instrument) electronics of each of the first and second measuring instruments are set up to be operated at least temporarily in a respective first operating mode (active operation),

[0021] • and wherein the (measuring instrument) electronics of the first measuring instrument are configured, while the (measuring instrument) electronics of the second measuring instrument are allowed to operate in their first operating mode, to be allowed to operate at least temporarily in a second operating mode (calibration mode); • wherein the (measuring instrument) electronics of each of the first and second measuring instruments are each configured, in their respective first operating mode, to energize the respective excitation arrangement, namely to feed an electrical driver signal, having, for example, a predefinable and / or an instantaneous (mechanical) resonance frequency of the respective sensor and / or a predefinable signal amplitude, into the respective excitation arrangement, in such a way,that at least one (physical) measurement effect dependent on the at least one measured quantity and detectable by the sensor arrangement is caused in the measured material, and that the respective measurement signal is at least partially dependent on the respective measurement effect, for example, by having a signal parameter dependent on the respective measured quantity, as well as receiving and evaluating the at least one (first) measurement signal, for example, by determining (digital) measured values ​​representing the respective at least one measured quantity (using the at least one measurement signal received during the first operating mode);

[0022] • wherein, by means of the sensor of at least the second measuring device with (measuring device) electronics operating in the first operating mode, a (first) disturbance is induced in the measuring device system, for example, superimposing the measurement effect caused by the sensor of the first measuring device and / or affecting the functionality of the measuring device system and / or impairing the measurement accuracy of the first measuring device, and wherein said disturbance is transmitted to the first measuring device, for example via a pressure device or the medium carried therein, such that the measurement signal of the sensor of the first measuring device is at least partially dependent on the (first) disturbance, for example, namely when operating in its first operating mode

[0023] The electronics of the second measuring device have a signal parameter that depends on both the respective measured quantity and the (first) disturbance;

[0024] • and wherein the (measuring) electronics of the first measuring device are configured to receive and evaluate the at least one (first) measurement signal in its second operating mode, namely (using the at least one (first) measurement signal received during the second operating mode) to detect and / or quantify the (first) disturbance. Furthermore, the invention also comprises a method for operating such a measuring device system according to one of the preceding claims, comprising:

[0025] • Activating the first operating mode (measuring device) electronics of the second measuring device to generate the disturbance of the measuring device system;

[0026] • Activating the second operating mode of the (measuring instrument) electronics of the first measuring instrument;

[0027] • and using the (measuring) electronics of the first measuring instrument to detect and / or quantify the (first) disturbance based on the (first) measurement signal of the sensor of the first measuring instrument.

[0028] According to a first embodiment of the invention, it is further provided that the (first) disturbance is induced by the measuring medium flowing through the sensor of the second measuring device.

[0029] According to a second embodiment of the invention, it is further provided that the (first) disturbance in the measuring medium guided in the sensor of the second measuring device is established pressure fluctuations or results from such pressure fluctuations.

[0030] According to a third embodiment of the invention, it is further provided that the (first) disturbance is a (time-varying) magnetic field generated by the excitation arrangement of the second measuring device, for example with a (maximum) magnetic flux density of more than 100 pT (microtesla), which also partially penetrates the first measuring device, or results from the same magnetic field.

[0031] According to a fourth embodiment of the invention, it is further provided that the (first) disturbance results from (forced) mechanical vibrations of the sensor of the second measuring device, for example by means of the excitation arrangement of the second measuring device, for example by coupling mechanical vibrations of the sensor of the second measuring device into the sensor of the first measuring device via a pressure device.

[0032] According to a fifth embodiment of the invention, it is further provided that the

[0033] The electronics of the first measuring device are configured, in the second operating mode, to determine, for example, to quantify, a time-varying component of a measurement error resulting from or representing the (first) disturbance. According to a sixth embodiment of the invention, it is further provided that the

[0034] The electronics of the first measuring instrument are set up to adjust an (adaptive) filter for the measuring signal using at least one (first) measurement signal received during its second operating mode or based on the detected disturbance, for example in such a way that the (first) disturbance in the measurement signal is suppressed or filtered out of the measurement signal.

[0035] According to a seventh embodiment of the invention, it is further provided that the (first) disturbance in the (first) measuring signal of the first measuring device causes a beat frequency, which depends, for example, on a (frequency) difference between a signal frequency of the driver signal of the first measuring device and a signal frequency of the driver signal of the second measuring device.

[0036] According to an eighth embodiment of the invention, it is further provided that the electrical driver signal of the first measuring device has a signal frequency that deviates from a signal frequency of the driver signal of the second measuring device by more than 0.01 Hz (Hertz), for example not less than 0.5 Hz and / or not more than 10 Hz.

[0037] According to a ninth embodiment of the invention, it is further provided that the electrical driver signal of each of the first and second measuring devices is at least temporarily designed as a square wave signal, for example such that the electrical driver signal of the first measuring device has a clock rate (clock frequency) that deviates from a clock rate of the driver signal of the second measuring device by less than 10 Hz.

[0038] According to a tenth embodiment of the invention, it is further provided that the

[0039] The electronics of the first measuring instrument (M1) are set up in the second operating mode to not energize the excitation arrangement for a set duration, for example adjustable and / or not less than 1 s (second), and to receive and evaluate the (first) measurement signal, for example not representing a measurement effect (caused by means of the associated excitation arrangement) and / or (merely) the (first) disturbance, for example namely (using the at least one (first) measurement signal received during the second operating mode to detect and / or quantify the (first) disturbance.Further developing this embodiment of the invention, it is also provided that the duration is more than 5 s, for example not less than 10 s, and / or more than 10 times, for example not less than 50 times, the reciprocal of a (frequency) difference between a signal frequency of the driver signal of the first measuring device (provided in the first operating mode of the measuring device electronics of the first measuring device) and a signal frequency of the driver signal of the second measuring device. According to an eleventh embodiment of the invention, it is further provided that the sensor of each of the first and second measuring devices has at least one (measuring) tube with a lumen extending from a first (tube) end to a second (tube) end, enclosed by a wall, for example made of metal.Further developing this embodiment of the invention, it is also provided that each of the (measuring) tubes of the first and second measuring devices is each equipped to be supplied with a medium through which it is supplied, for example, by being supplied with a medium and vibrating during this process.

[0040] According to a twelfth embodiment of the invention, it is further provided that the sensor of each of the first and second measuring devices has or is formed by a vibration element, for example, a tubular one. Further developing this embodiment of the invention, it is further provided that each of the vibration elements is configured to be contacted with a measuring medium, for example, by means of a vibrating element.through which current flows, and during which time it is allowed to vibrate and / or that the vibration element of each of the first and second measuring devices is set up (driven by the excitation arrangement) to perform at least partially (forced) mechanical vibrations with at least one useful frequency corresponding to, for example, an instantaneous resonance frequency of the respective sensor and / or not less than 50 Hz (Hertz) and / or not more than 2 kHz, for example such that the useful frequency of the vibration element of the second measuring device deviates by more than 0.1 Hz (Hertz) from the useful frequency of the vibration element of the first measuring device.Alternatively or additionally, at least one (first) measurement signal of each of the first and second measuring devices may also represent mechanical vibrations of the respective vibration element, for example, a velocity of vibrational movements of the vibration element, and / or the excitation arrangement of each of the first and second measuring devices may each have at least one, for example, electrodynamic or piezoelectric, vibration exciter, which is configured to convert electrical (excitation) power fed into the excitation arrangement into forced mechanical (useful) vibrations of the sensor, for example, a vibration element of the sensor around a static rest position, (actively) exciting mechanical power.According to a thirteenth embodiment of the invention, it is further provided that, by means of the sensor of the first measuring device with (measuring device) electronics operating in the first operating mode, a second disturbance is induced in the measuring device system, for example, superimposing the measuring effect caused by the sensor of the second measuring device and / or influencing the functionality of the measuring device system and / or impairing the measuring accuracy of the second measuring device, such that this second disturbance is transmitted to the second measuring device, for example via a pressure device or the measuring substance carried therein, and that the measuring signal of the sensor of the second measuring device is at least partially dependent on the second disturbance, for example, in the case of (measuring device) electronics of the first measuring device operating in the first operating mode, it has a signal parameter that depends on both the respective measured quantity and the second disturbance.Further developing this embodiment of the invention, it is also provided that the (measuring device) electronics of the second measuring device are configured, while the (measuring device) electronics of the first measuring device are allowed to operate in its first operating mode, to be allowed to operate at least temporarily in a second operating mode, and to receive and evaluate the same (representing the second disturbance) measuring signal in the second operating mode, for example, to detect and / or quantify the second disturbance using the at least one (first) measuring signal received during the second operating mode.Advantageously, the (measuring device) electronics of the second measuring device can also be configured to not energize the excitation arrangement for a set duration Tnexc2, which can be adjusted and / or is not less than 1 s (second), in the second operating mode, and also to receive and evaluate the (first) measurement signal (s1), which may not represent a measurement effect (caused by means of the associated excitation arrangement) and / or may represent (only) the (second) disturbance, for example, to detect and / or quantify the (second) disturbance using the (first) measurement signal (s1) received during the second operating mode.

[0041] According to a fourteenth embodiment of the invention, it is further provided that the sensor of the first measuring device and the sensor of the second measuring device are connected in series (fluid-technical).

[0042] According to a fifteenth embodiment of the invention, it is further provided that the sensor of the first measuring device and the sensor of the second measuring device are connected in parallel (fluid-technical).

[0043] According to a sixteenth embodiment of the invention, it is further provided that the sensors of the first and second measuring devices are identical in construction. According to a seventeenth embodiment of the invention, it is further provided that the measuring device system electronics of the first and second measuring devices are identical in construction.

[0044] According to an eighteenth embodiment of the invention, it is further provided that the first and second measuring devices are identical in construction.

[0045] According to a nineteenth embodiment of the invention, it is further provided that a minimum distance between the sensors of the first and second measuring devices is less

[0046] than 50 m (meters), for example not more than 20 m, and / or less than 200 times a maximum of the nominal diameters of the first and second measuring devices or their sensors, for example such that a minimum distance between the sensor arrangement of the first measuring device and the excitation arrangement of the second measuring device is less than 20 m.

[0047] According to a twentieth embodiment of the invention, it is further provided that the sensor arrangement of each of the first and second measuring devices is at least

[0048] a (electrodynamic, opto-electronic or piezo-electric) vibration sensor, which vibration sensor is configured to detect (forced) mechanical (useful) vibrations of the respective sensor, for example, namely a (tubular) vibration element, namely the sensor around a static rest position, and to convert them into at least one (first) measurement signal, for example, namely to provide an electrical (alternating) voltage suitable as a measurement signal.Further developing this embodiment of the invention, it is further provided that the at least one vibration sensor of each of the first and second measuring devices is each configured to detect mechanical vibrations of the respective associated measuring sensor, for example a (tubular) vibration element of the measuring sensor around a static rest position, and to convert them into the (first) measuring signal, such that the measuring signal represents mechanical vibrations of the respective measuring sensor, for example a velocity of vibrational movements of a (tubular) vibration element of the measuring sensor.

[0049] According to a twenty-first embodiment of the invention, it is further provided that the sensor of each of the first and second measuring devices is configured to be subjected, at least temporarily, to a flow of the measuring medium. According to a twenty-second embodiment of the invention, it is further provided that the sensor of at least the first measuring device (M1) is configured to be subjected, for example, for not less than 1 minute, to a flow of a cleaning fluid, such as (sterile) water and / or an alkali, at a velocity of not less than 0.1 m / s, for the purpose of carrying out (in-place) cleaning (CIP), for example, (in-place) disinfection and / or (in-place) sterilization (SIP).

[0050] to be subjected to a (reference) flow velocity. Further developing this embodiment of the invention, it is also provided that the (measuring device) electronics of the first measuring device are configured to activate or keep activated the second operating mode at least temporarily during the (location-based) cleaning of the sensor.

[0051] According to a twenty-third embodiment of the invention, it is further provided that at least the measuring instrument electronics of the first measuring instrument are configured to receive and evaluate (externally generated) (process) data, for example, such that the measuring instrument electronics of the first measuring instrument activate its second operating mode based on a (process state) message contained in the (process) data. Further developing this embodiment of the invention, it is also provided that the (process state) message indicates that an in-situ (re)calibration of the first measuring instrument can be started or has been started. Alternatively or additionally, the (process state) message can also be displayed.A corresponding process state (indicated by the message) may consist of the substance being measured flowing through the sensor of the first measuring device with a predetermined and / or stationary, for example (constant) zero, (reference) volume and / or (reference) mass flow rate, and / or that the substance being measured, for example with a predetermined and / or stationary.

[0052] (Reference) volume and / or (reference) mass flow rate through the sensor of the second measuring device, for example, that the substance flows through the sensor of the second measuring device with a predetermined and / or steady (reference) volume and / or (reference) mass flow rate, and that no substance flows through the sensor of the first measuring device, or that the substance flows through the sensor of the first measuring device with a (constant) zero (reference) volume and / or (reference) mass flow rate, and / or that the substance does not (currently) flow in the sensor of the first measuring device, thus exhibiting a zero (reference) mass flow rate or (reference) volume flow rate, for example, that the substance does not (currently) flow in the sensor of the first measuring device and that the substance (currently) flows through the sensor of the second The measuring device is flowing, and / or that a mass or...The volume flow rate of the measured substance in the sensor of the first measuring device is not switched on, and / or a pump (integrated into the pressure device) is switched on, and / or a valve (integrated into the pressure device) is closed, and / or a valve (integrated into the pressure device) is open.

[0053] According to a twenty-fourth embodiment of the invention, it is further provided that each of the first and second measuring devices is designed as a magnetic-inductive flowmeter (MID), for example also in such a way that each of the first and second measuring devices is designed as a magnetic-inductive flowmeter (MID), and that a minimum distance between the sensor arrangement of the first measuring device and the excitation arrangement of the second measuring device is less than 5 m, in particular less than 2 m, at least the

[0054] The electronics of the first measuring device are configured to receive and evaluate (externally generated) (process) data, such that the electronics of the first measuring device activate its second operating mode based on a (process state) message contained in the (process) data. The (process state) message can, in particular, indicate that a pump (integrated into the pressure vessel) controlling the mass or volume flow of the measured substance in the sensor of the first measuring device is switched on, and / or the (process state) message indicates that a valve (integrated into the pressure vessel) controlling the mass or volume flow of the measured substance in the sensor of the first measuring device is open, and / or the (process state) message indicates that the measured substance, for example, with a predefined and / or stationary (reference) volume and / or

[0055] (Reference) mass flow through the sensor of the first measuring device (M1), for example such that the flow velocity of the medium flowing through the sensor of the first measuring device is not less than 0.1 m / s and / or a

[0056] The (reference) volume flow rate is not less than 0.1 l / s (liters per second).

[0057] According to a twenty-fifth embodiment of the invention, it is further provided that each of the first and second measuring devices is designed as a Coriolis flowmeter (CDM). Further developing this embodiment, it is also provided that a minimum distance between the sensor arrangement of the first measuring device and the excitation arrangement of the second measuring device is more than 20 m, for example, not more than 50 m, and / or more than 50 times the maximum of the nominal diameters of the first and second measuring devices or their sensors.

[0058] According to a first further development of the invention, the measuring device system further comprises: a control element connected to the measuring device electronics of the first measuring device via a signal connection, for example designed as a (combined) display and control element, for (local) input of (control) data useful for the control of the measuring device system and / or the

[0059] The (re-)programming of the measuring instrument electronics includes (configuration) data. Advantageously, in this further development of the invention, the measuring instrument electronics of the first measuring instrument can also be configured to receive (control) data entered via the operating element, for example, to execute control commands contained in the (control) data or to switch from the first operating mode to the second operating mode.

[0060] According to a second embodiment of the invention, the measuring device system further comprises: a display element connected to the measuring device electronics of the first measuring device (M1) via a signal connection, for example designed as a (combined) display and control element and / or having one or more light-emitting diodes (LEDs), for (local) display of

[0061] (Measurement and / or operating) data of the measuring device system, for example, (digital) measured values ​​for the at least one measured quantity and / or one or more (warning) messages signaling a malfunction of the measuring device system. Advantageously, in this further development of the invention, the measuring device electronics of the first measuring device can also be configured to transmit (measurement and / or operating) data, for example, (digital) measured values ​​for the at least one measured quantity and / or one or more (warning) messages signaling malfunctions of the measuring device system, to the display element. Furthermore, the display element can also be configured to

[0062] (Measurement and / or operational) data, for example measured values ​​for at least one measured quantity, to be displayed numerically, for example alphanumerically, and / or (measurement and / or operational) data, for example one or more, signaling a fault in the measuring instrument system

[0063] (Warning) messages are displayed using color coding.

[0064] The invention and advantageous embodiments thereof are explained in more detail below with reference to exemplary embodiments illustrated in the figures of the drawing. Identical, equivalent, or similarly functioning parts are designated with the same reference numerals in all figures; where clarity requires it or it otherwise appears appropriate, previously mentioned reference numerals are omitted in subsequent figures. Further advantageous embodiments or developments, in particular combinations of aspects of the invention initially described only individually, will also become apparent from the figures of the drawing and / or from the claims themselves.

[0065] Specifically, we show:

[0066] Figs. 1a, 1b Exemplary embodiments of a measuring instrument system according to the invention; and

[0067] Figs. 2a, 2b show further embodiments of a measuring instrument system according to the invention. Figures 1a, 1b, 2a and 2b schematically illustrate embodiments of a measuring instrument system.

[0068] The measuring device system is formed by means of a pressure vessel, in particular by means of one or more fluidically interconnected (process) lines and / or compliant with Directive 2014 / 68 / EU, for conveying and / or holding one or more (fluid) substances, in particular a gas, a liquid or a dispersion, as well as by means of a first (flow) measuring device M1 for measuring one or more measured quantities, for example a mass flow and / or a volume flow, of one or more substances held or conveyed in the pressure vessel, and by means of a second measuring device, for example of type or design identical to the first measuring device.

[0069] A (flow) measuring device M2 is used to measure one or more measured quantities, for example, a mass flow rate and / or a volume flow rate, of one or more substances held or guided in the pressure vessel. The pressure vessel and the measuring devices, and thus the measuring device system formed by them, can, for example, be components of a plant for a process engineering operation, in particular a filling or refueling plant or a bioreactor. Accordingly, the pressure vessel and the sensors of the first and second measuring devices can, for example, be designed or arranged such that a minimum distance between the sensors 10 of the first and second measuring devices is less than 50 m (meters), for example, no more than 20 m, and / or less than 200 times a maximum of the nominal diameters of the first and second measuring devices or their sensors 10. Furthermore, the first and second measuring devices can each be, for example, a

[0070] The device in question is a Coriolis flowmeter (CDM). Alternatively, each of the first and second measuring devices could also be a magnetic-inductive flowmeter (MID). Furthermore, the measuring device system can, of course, include additional (flow) measuring devices, possibly of the same type or design as the first measuring device.

[0071] As schematically shown in Figs. 1a, 1b, 2a and 2b, the first measuring device M1 comprises an (electrical-to-physical-to-electrical) sensor 10.1 and (measuring device) electronics 20.1 electrically connected to the same sensor 10.1, in particular formed by means of one or more microprocessors, and the second measuring device M2

[0072] The invention comprises an (electrical-to-physical-to-electrical) sensor 10.2 and (measuring) electronics 20.2 electrically connected to the sensor 10.2, in particular by means of one or more microprocessors. According to a further embodiment of the invention, the sensors and / or the measuring system electronics of the first and second measuring devices are identical in construction; for example, the first and second measuring devices are identical in construction. The (measuring) electronics 20.1 and / or the (measuring) electronics 20.2 can advantageously be

[0073] Furthermore, not least for the purpose of transmitting (measurement and / or operating) data collected by means of the respective measuring device (M1 or M2), such as measured values ​​determined for one or more measured variables, and / or for remote control, the device is (permanently) integrated into a higher-level electronic data processing system (EDP) formed, for example, by means of a programmable logic controller (PLC) and / or a process control system (PCS) and / or an edge (computing) device and / or a cloud (computing) system, in particular, it must be electrically connected to the higher-level electronic data processing system (EDP) or be integrated accordingly (signal and data technology) before the actual measurement operation begins, for example, via a standardized (field)bus system (PROFIBUS, FOUNDATION FIELDBUS, HART, MODBUS, EtherNET Powerlink, EtherCAT, IO-Link, SPE, APL, etc.).Accordingly, the respective (measuring device) electronics can also be configured to communicate with the higher-level electronic data processing system (EDP) via a 2L data line and / or wirelessly, for example using WirelessHART, wirelessPROFIBUS, WLAN, LTE etc., for example to send (measuring system) data to the higher-level electronic data processing system and / or (setting) values ​​for the respective.

[0074] (Measuring instrument) electronics to receive configuring (setting) parameters or (controlling) commands. According to a further embodiment of the invention, the (measuring instrument) electronics 20.1 and / or the (measuring instrument) electronics 20.2 have at least one data input and / or a radio unit for this purpose, and / or the (measuring instrument) electronics 20.1 and / or the (measuring instrument) electronics 20.2 are further configured to control or execute the (re-)commissioning of the respective measuring instrument automatically and / or in dialogue with a user of the measuring instrument system and / or in conjunction with the aforementioned higher-level electronic data processing system (EDP). In addition, the (measuring instrument) electronics 20.1 and / or the (measuring instrument) electronics 20.2 can have at least one data output for outputting, in particular,Digital and / or time-stamped (measuring system) data, for example, measurement and / or operating values ​​characterizing the respective (measuring device) electronics and / or measurement and / or operating values ​​characterizing the respective sensor, are transmitted to the higher-level electronic data processing system. Alternatively or additionally, the (measuring device) electronics 20.1 and / or the (measuring device) electronics 20.2, or the measuring device formed by them, can also be supplied with electrical energy from an external mains supply, possibly also implemented by the aforementioned higher-level electronic data processing system (EDP).

[0075] The sensor of each of the first and second measuring devices is connected (fluidically) to the pressure vessel, for example by means of a (standard) flange connection, specifically by being inserted into a (process) line of the pressure vessel, and is also configured to be contacted by the measured medium (during operation of the measuring system), specifically by a fluid flowing through it. The pressure vessel and the sensors of the first and second measuring devices can, for example, be designed or arranged such that the sensor 10.1 of measuring device M1 and the sensor 10.2 of measuring device M2 are connected in series (fluidically), as also shown schematically in Figs. 1a and 1b, respectively. Alternatively, the pressure device and the sensors of the first and second measuring devices can also be designed or arranged such that the sensor 10.1 of measuring device M1 and the sensor 10.2 of measuring device M2 are connected in parallel (fluid-technical) as shown schematically in Fig. 2a or 2b.

[0076] Not least in the aforementioned case that the measuring instrument system are components of a plant for a process engineering process, the sensor 10.1 of at least the measuring instrument M1, for example also the sensor of each of the first and second measuring instruments, may furthermore be configured to carry out (local) cleaning (CIP), for example, (local) disinfection and / or (local) sterilization (SIP), temporarily, in particular for not less than 1 min, through which a cleaning fluid, for example, (sterile) water and / or an alkali, has a (fluid) temperature of not less than 110°C and / or an electrical conductivity of not less than 5 pS / cm, at a (reference) flow velocity of not less than 0.1 m / s.

[0077] The sensor of each of the first and second measuring devices also comprises both an excitation arrangement, formed, for example, by means of at least one electrical coil and / or by means of at least one (electrodynamic or piezoelectric) vibration exciter, and electrically connected to the (measuring device) electronics 20 of the respective measuring device, and a sensor arrangement, formed, for example, by means of at least one (electrodynamic or piezoelectric) vibration sensor, and signal-technically coupled, in particular electrically connected, to the (measuring device) electronics (20.1 or 20.2) of the respective measuring device (M1 or M2). This is particularly relevant in the aforementioned case where the measuring device system is a component of a plant for a process engineering process.Since the measuring system is designed such that the minimum distance between the sensors of the first and second measuring devices is less than 50 m, the minimum distance between the sensor arrangement of measuring device M1 and the excitation arrangement of measuring device M2 can accordingly also be less than 50 m, for example, less than 20 m.

[0078] The excitation arrangement of each of the first and second measuring devices is designed and configured to convert the electrical (excitation) power supplied to it into mechanical (measuring) power that serves to produce a measurement effect dependent on at least one measured quantity (of the respective sensor), for example, by (actively) exciting forced mechanical (useful) vibrations of the sensor. The sensor arrangement of measuring device M1, in turn, is configured to detect a measurement effect dependent on at least one measured quantity (of the measured substance or the sensor 10.1), for example, mechanical vibrations of the sensor 10.1 (dependent on at least one measured quantity), and to convert it into a (first) measurement signal s1.1 representing the same measurement effect, for example, the velocity of vibrational movements of the sensor.1. To provide a suitable electrical (alternating) voltage, and the sensor arrangement of the measuring device M2 is configured to detect a measurement effect (of the measured material or the sensor 10.2) that depends on at least one measured quantity, for example, mechanical vibrations of the sensor 10.2 (dependent on at least one measured quantity), and to convert it into a (first) measurement signal s1.2 representing the same measurement effect, for example, the velocity of vibrational movements of the sensor, for example, by providing an electrical (alternating) voltage suitable as a measurement signal s1.2. Accordingly, both the (measuring device) electronics 20.1 and the (measuring device) electronics 20.2 are each also configured to operate, at least temporarily, in a respective first operating mode (1.1 or 1.2), whereby each of the.

[0079] (Measuring instrument) electronics (20.1 or 20.2) in their respective first operating mode (active operation) energize the respective excitation arrangement, namely feeds an electrical driver signal (e1.1 or e1.2) into the respective excitation arrangement, in particular having a predefinable and / or an instantaneous (mechanical) resonance frequency fR of the respective sensor (10.1 or 10.2) and / or a predefinable signal amplitude, such that at least one (physical) measuring effect dependent on at least one measured quantity and detectable by the sensor arrangement is effected in the measured substance and that the respective measuring signal (s1.1 or s1.2) is at least partially dependent on the respective measuring effect, in particular having a signal parameter dependent on the respective measured quantity, and in which the

[0080] The electronics of the measuring device (20.1 and 20.2) each receive and evaluate the respective at least one (first) measurement signal (s1.1 and s1.2, respectively), in particular to determine (using the at least one measurement signal received during the first operating mode) the respective (digital) measured values ​​representing at least one measured quantity. According to a further embodiment of the invention, the electrical driver signal e1.1 of the first measuring device has a signal frequency that deviates from the signal frequency of the driver signal e1.2 of the second measuring device by more than 0.1 Hz (Hertz), in particular by not less than 0.5 Hz and / or not more than 10 Hz. The driver signal of each of the measuring devices can, for example, be configured as a sinusoidal signal, at least intermittently.Alternatively or additionally, the electrical driver signal of each of the first and second measuring devices can also be configured, at least temporarily, as a square wave signal, for example, such that the electrical driver signal e1.1 of measuring device M1 has a clock rate (clock frequency) that deviates from the clock rate of the driver signal e1.2 of measuring device M2 by less than 10 Hz. According to a further embodiment of the invention, the sensor arrangement of measuring device M1 and / or the sensor arrangement of measuring device M2 is further configured to provide a second measurement signal (s2.1 or s2.2) representing the respective measurement effect, for example, an electrical (alternating) voltage serving as a measurement signal. Furthermore, the (measuring device) electronics 20.1 of the measuring device M1 and / or the (measuring device) electronics 20.2 of the measuring device M2 can be configured, also based on the respective second measurement signal (s2.1 or s2.2), to generate the aforementioned (digital) measured values ​​(XM1 or s2.2).XM2) to determine at least one measured quantity.

[0081] For the (on-site) display of (measurement and / or operating) data of the measuring device system, for example, namely the aforementioned (digital) measured values ​​for the at least one measured quantity and / or, for example, one or more (signaling a malfunction of the measuring device system) (warning) messages, the measuring device system, according to a further embodiment of the invention, comprises at least one display element 30, which is connected to the measuring device electronics 20.1 of at least the measuring device M1 via a signal connection and is, for example, also designed as a (combined) display and control element and / or has one or more light-emitting diodes (LEDs).

[0082] Accordingly, after further development, at least the

[0083] The measuring instrument electronics 20.1 of measuring instrument M1 are further configured to transmit (measurement and / or operating) data, for example (digital) measured values ​​for at least one measured quantity and / or (warning) messages signaling one or more disturbances of the measuring instrument system, to the display element. In addition, the measuring instrument electronics 20.2 of measuring instrument M2 can also be configured to transmit (measurement and / or operating) data to the display element 30 and / or the measuring instrument system can further connect another display element to the measuring instrument electronics 20.2 of at least measuring instrument M2 via a signal connection.

[0084] (On-site) display of (measurement and / or operating) data of the measuring device system. According to a further embodiment of the invention, it is further provided that at least the measuring device M1 has an operating element 40, connected to its measuring device electronics 20.1 via a signal connection and designed, for example, as a (combined) display and operating element, for

[0085] The measuring device M1 has a (local) input of (control) data useful for controlling the measuring device system and / or (configuration) data useful for (re)programming the measuring device electronics 20.1. Furthermore, the measuring device electronics 20.1 of the measuring device M1 can advantageously also be configured to receive (control) data entered via an operating element, in particular to execute control commands contained in the (control) data, and / or the measuring device M2 can also include an operating element connected to its measuring device electronics 20.1 via a signal connection for (local) input of (control) data useful for controlling the measuring device system and / or (configuration) data useful for (re)programming the measuring device electronics 20.1. Alternatively or additionally, at least the measuring device electronics 20.1 of the measuring device M1 can also be configured to receive and evaluate (process) data generated externally by the measuring device, for example also by means of the measuring device M2.

[0086] According to a further embodiment of the invention, the sensor of each of the first and second measuring devices comprises one or more (measuring) tubes, each with a lumen extending from a respective first (tube) end to a respective second (tube) end, enclosed by a wall, for example, made of metal. Each of the (measuring) tubes is specifically configured to be permeated by a fluid, for example, by a fluid flowing through it and vibrating during this process. Finally, in the aforementioned case where the first and second measuring devices are each configured as Coriolis flowmeters (CDMs), the sensor of each of the first and second measuring devices, according to another embodiment, comprises a vibrating element, for example, a tubular element, specifically formed by means of the aforementioned respective (measuring) tube.Each of the vibration elements is specifically configured to be contacted by the measured medium, for example by flowing around or through it, and to vibrate during this process; in particular, the respective vibration element is configured (driven by the associated excitation arrangement) to perform at least partially (forced) mechanical vibrations with at least one useful frequency corresponding to, for example, an instantaneous resonance frequency fR of the respective sensor 10 and / or not less than 50 Hz (Hertz) and / or not more than 2 kHz (kilohertz) when the (measuring device) electronics are operating in the respective first operating mode (1.1 or I.2).Advantageously, the sensors of the measuring devices can also be designed such that the aforementioned operating frequency of the vibration element of the second measuring device deviates from the operating frequency of the vibration element of the first measuring device by more than 0.1 Hz (Hertz), for example, not less than 0.5 Hz and / or not more than 10 Hz. Furthermore, the sensor arrangement of each of the first and second measuring devices is also designed such that the measurement signal s1 provided thereby represents corresponding mechanical vibrations of the respective vibration element, for example, a velocity of oscillatory movements of the vibration element. According to a further embodiment of the invention, the sensor arrangement of each of the first and second measuring devices accordingly comprises at least one (electrodynamic,

[0087] optoelectronic or piezoelectric) vibration sensor, each vibration sensor being configured to detect (forced) mechanical (useful) vibrations of the respective measuring device, for example, the aforementioned (tubular) vibration element of the measuring device around a static rest position, and to convert these vibrations into at least one measurement signal (s1.1 or s1.2). According to a further embodiment of the invention, the excitation arrangement of each of the first and second measuring devices each has at least one vibration exciter, for example, electrodynamic or piezoelectric, which is configured to convert electrical (excitation) power fed into the excitation arrangement into (actively) exciting mechanical power that forces mechanical (useful) vibrations of the measuring device. In the aforementioned case, where the measuring device of each of the first and second measuring devices each has a vibration element, orThus formed, the vibration exciter can accordingly be configured, for example, to convert the supplied electrical (excitation) power into forced mechanical (useful) vibrations of the aforementioned vibration element around a corresponding static rest position, thereby generating exciting mechanical power.

[0088] As already mentioned, in a measuring device system according to the invention, not least also a measuring device system of the aforementioned type, in which the minimum distance between the sensors of the first and second measuring devices or between the sensor arrangement of measuring device M1 and the excitation arrangement of measuring device M2 is less than 20 m, it can also occur that, by means of the sensor of at least the measuring device M2 with (measuring device) electronics 20.2 operating in the first operating mode I, a (first) disturbance ( ) in the measuring device system can be induced, in particular superimposing the measuring effect caused by means of the sensor of the measuring device M1 and / or influencing the functionality of the measuring device system and / or impairing the measuring accuracy of the measuring device M1, and that this (first) disturbance (O) is transmitted to the measuring device M1, for example via a pressure device orthe measured substance contained therein is transmitted; this is particularly also the case in such a way that the measuring signal s1 of the sensor of the measuring instrument M1 is at least partially dependent on the (first) disturbance, for example, namely, in the case of the (measuring instrument) electronics 20.2 of the measuring instrument M2 operating in its first operating mode I.2, exhibits a signal parameter that depends on both the respective measured quantity and the (first) disturbance, and / or that the (first) disturbance in the (first) measuring signal s1.1 of the measuring instrument M1 causes a beat frequency, for example, dependent on pressure oscillations established in the measured substance and / or dependent on a (frequency) difference between a signal frequency of the driver signal e1.1 and a signal frequency of the driver signal e1.2. The (first) disturbance (C-) can, for example, be caused by the sensor 10.The disturbance may be induced by the flowing medium in measuring instrument M2, for example, by pressure fluctuations established in the medium guided in the sensor of measuring instrument M2 (propagating to the medium guided in sensor 10.1 of measuring instrument M1) or by sound generated in sensor 10.2 of measuring instrument M2. Alternatively or additionally, the (first) disturbance may also be caused, for example, by an excitation arrangement of measuring instrument M2, in particular with a (maximum) magnetic flux density of more than [value missing].

[0089] a magnetic field of 100 pT (microtesla) generated, which also partially penetrates the measuring device M1 (and is time-varying), or results from the same magnetic field. This is particularly relevant in the aforementioned case where the first and second measuring devices are each considered as

[0090] In the case of a Coriolis flow meter (CDM), the (first) disturbance can also result from (forced) mechanical vibrations of the sensor 10.2 of the measuring device M2, excited, for example, by means of the excitation arrangement of the measuring device M2, in particular by mechanical vibrations of the sensor 10.2 of the measuring device M2 being coupled into the sensor 10.1 of the measuring device M1 via the pressure device and / or via the measuring medium guided in the measuring device system, and / or the (first) disturbance can also be coupled into the sensor 10.1 of the measuring device M1 if the minimum distance between the sensor arrangement of the measuring device M1 and the excitation arrangement of the measuring device M2 is more than 20 m, for example, also in a range between 20 m and 50 m, and / or if the minimum distance between the sensor arrangement of the measuring device M1 and the excitation arrangement of the Measuring device M2 more than 50 times a maximum of the nominal diameters of the first and second measuring devices orwhose sensor is

[0091] In order to determine as early as possible, for example during (re-)commissioning of the measuring device system, whether the aforementioned (first) fault in the

[0092] The measuring instrument system can occur or does occur if the (measuring instrument) electronics 20.1 of the measuring instrument M1 are set up, while the (measuring instrument) electronics 20.2 of the measuring instrument M2 are allowed to operate in their first operating mode I.2, at least temporarily to be allowed to operate in a second operating mode (11.1 - calibration mode) and the

[0093] The (measuring instrument) electronics 20.1 of the measuring instrument M1 are set up, in whose operating mode 11.1 the at least one (first) measurement signal s1.1 is received and evaluated, namely (using the at least one (first) measurement signal s1.1 received during the second operating mode 11.1 to detect the aforementioned disturbance (C-), for example also to quantify and / or output it, for example also to transmit it to the aforementioned electronic data processing system. Advantageously, the

[0094] The (measuring instrument) electronics 10.1 of the measuring instrument M1, for example, may be set up in the second operating mode 11.1 to determine and / or quantify a time-varying component of a measurement error resulting from or representing the (first) disturbance, which the measured values ​​determined during this time exhibit for at least one measured quantity. Alternatively or additionally, the (measuring instrument) electronics 10.1 of the measuring instrument M1 can also be configured to adjust an (adaptive) filter for the measuring signal s1.1 implemented in the electronics of the measuring instrument M1 using at least one measurement signal s1.1 received during the second operating mode 11.1 or based on the determined disturbance (C-), in particular such that subsequently, for example in operating mode 1.1, the disturbance is suppressed (by means of the filter) in the measurement signal s1.1 or filtered out of the measurement signal s1 (by means of the filter).In the aforementioned case where the sensor arrangement of the measuring device M1 also provides the measurement signal s2.1, the (measuring device) electronics 20.1 can advantageously be further configured to receive the at least one (second) measurement signal s1.2 in its operating mode 11.1 and to detect or quantify the aforementioned disturbance (C-) using the same measurement signal s1.2. According to a further embodiment of the invention, the (measuring device) electronics 20.1 of the measuring device M1 are specifically configured, in the second operating mode 11.1, to not energize either the excitation arrangement for a preset duration Tnexd, which can be adjusted (during operation) and / or is not less than 1 s (second), or to not energize the at least one measurement signal s1 (which then does not produce a measurement effect by means of the associated excitation arrangement or merely represents the disturbance).1 to receive and evaluate, in particular (using the at least one measurement signal s1.1 received during operating mode 11.1) to detect and / or quantify the disturbance (C-). Advantageously, the time duration Tnexd can be selected or set, for example, such that it is more than 5 s (seconds), in particular not less than 10 s, and / or more than 10 times, for example also not less than 50 times, the reciprocal of a (frequency) difference between a signal frequency of the driver signal e1.1 of the measuring instrument M1 (provided in operating mode 1.1) and a (current) signal frequency of the driver signal e1.2 of the measuring instrument M2.

[0095] In the aforementioned case, where the measuring device M1 includes the operating element 40 for (local) input of (control) data, the measuring device electronics 20.1 of the measuring device M1 can advantageously also be configured to receive (control) data entered via the operating element and to switch from the first operating mode 1.1 to the second operating mode 11.1 (based on one or more corresponding control commands contained in the control data). In the other aforementioned case, where the measuring device electronics 20.1 of the measuring device M1 is configured to receive and evaluate externally generated process data, the measuring device electronics 20.1 of the measuring device M1 can also advantageously be configured to (automatically) activate the second operating mode 11.1 based on a (process status) message contained in the (process) data. Such a message (triggering the activation of the second operating mode 11.1) can, for example, display orA corresponding process state can, for example, consist of a measured substance, especially with a predetermined and / or stationary state.

[0096] The (reference) volume and / or (reference) mass flow rate through the sensor 10.1 of the measuring device M1, for example, such that the flow velocity of the flowing fluid is not less than 1 m / s and / or not more than 10 m / s. Alternatively or additionally, the (process state) message can also indicate, or a corresponding process state can consist of, the fluid flowing through the sensor of the measuring device M1 with a predetermined and / or stationary, in particular (constant) zero, (reference) volume and / or (reference) mass flow rate, or that the fluid flowing through the sensor 10.1 is (currently) not flowing, thus exhibiting a zero

[0097] The (process state) message can also indicate, for example, that a pump (integrated into the pressure vessel) is not switched on and / or that a pump (integrated into the pressure vessel) is switched on and / or that a valve (integrated into the pressure vessel) is closed and / or that a valve (integrated into the pressure vessel) is open. The (process status) message can, for example, also (directly) indicate that an in-situ (re-)calibration of the measuring device M1 can be started or has been started.that a process state allowing in-situ (re-)calibration has been reached. Not least in the aforementioned case where the first and second measuring devices are each designed as magnetic-inductive flow meters (MID), the aforementioned (process state) message can also indicate, or a corresponding process state can also consist of, a pump (integrated into the pressure device) being switched on to control a mass or volume flow rate of the measured substance in the sensor 10.1 of the measuring device M1, and / or a valve (integrated into the pressure device) being open to control a mass or volume flow rate of the measured substance in the sensor 10.1 of the measuring device M1, and / or the measured substance, in particular with a predetermined and / or steady-state (reference) volume and / or (reference) mass flow rate, flows through the sensor 10.1 of the measuring device M1, for example also in such a way that a flow velocity of the fluid passing through the sensor 10.1. The flow rate of the measuring medium flowing through measuring device M1 is not less than 0.1 m / s and / or a (reference) volume flow rate is not less than 0.1 l / s (liters per second). In the aforementioned case, where it is intended to carry out (stationary) cleaning at least on the sensor 10.1, the following applies.

[0098] The (measuring instrument) electronics 20.1 of the measuring instrument M1 may also be advantageously set up to activate or leave activated the operating mode 11.1 at least temporarily during this time.

[0099] In the same way that the first disturbance (C-) is induced in the measuring device system by means of the sensor 10.2 of the measuring device M2 with (measuring device) electronics 20.2 operating in the first operating mode I.2, a second disturbance can also be induced in the measuring device system according to the invention by means of the sensor 10.1 of the measuring device M1 with (measuring device) electronics 20.1 operating in the first operating mode 1.1, for example superimposing the measuring effect caused by means of the sensor 10.2 of the measuring device M2 and / or impairing the measuring accuracy of the measuring device M2, and thus also affecting the functionality of the measuring device system as a whole; This is particularly also achieved in such a way that the second disturbance is transmitted to the measuring device M2, especially via the pressure device or the measuring medium carried therein, and that the measuring signal s1.2 of the sensor 10.2 of the measuring device M2 is at least partially dependent on the second disturbance, in particular when operating in the first operating mode 1.1.

[0100] (Measuring device) electronics 20.1 of the measuring device M1 has a signal parameter that depends on both the respective measured quantity and the second disturbance. Accordingly, according to a further embodiment, the (measuring) electronics 20.2 of the measuring instrument M2 are also configured, while the (measuring) electronics 20.1 of the measuring instrument M1 are allowed to operate in their first operating mode 1.1, at least temporarily in a second operating mode II.2, in order to receive and evaluate the at least one (representing the second disturbance) measurement signal s1.2 in the same operating mode II.2, in particular to detect and / or quantify the aforementioned second disturbance using the at least one measurement signal s1.2 received during operating mode II.2. Advantageously, the (measuring) electronics 20.2 of the measuring instrument M2 can also be configured in whose operating mode II.2 both the excitation arrangement for a set, in particular,to not energize Tnexc2 for a duration of adjustable and / or not less than 1 s (second) and to receive and evaluate the measurement signal s1.2, in particular not representing a measurement effect (caused by means of the associated excitation arrangement) and / or (merely) the second disturbance, in particular to detect and / or quantify the second disturbance using the measurement signal s1 received during operating mode II.

Claims

PATEN TA NSPRÜCHE 1. Measuring instrument system, comprising: - a pressure vessel, in particular formed by means of one or more fluidically connected (process) lines and / or compliant with Directive 2014 / 68 / EU, for carrying and / or holding one or more (fluid) substances, in particular a gas, a liquid or a dispersion; - a first (flow) measuring device (M1) for measuring one or more measured quantities, in particular a mass flow rate and / or a volume flow rate, of one or more measured substances held or guided in the pressure vessel; as well as - at least one second measuring device, especially one of the same type or construction as the first. (Flow) measuring device (M2) for measuring one or more measured quantities, in particular a mass flow and / or a volume flow, of one or more measured substances held or guided in the pressure device; - where each of the first and second measuring devices is each comprising an (electrical-to-physical-to-electrical) sensor (10.1; 10.2) and (measuring) electronics (20.1; 20.2) electrically connected to the same sensor, in particular formed by means of one or more microprocessors; - wherein the sensor (10.1 ; 10.2) of each of the first and second measuring devices is connected (fluidically) to the pressure vessel, in particular by means of a flange connection, in particular by means of a flange connection, in particular by means of a process line of the pressure vessel, and is set up to be contacted by the medium being measured, in particular by means of which fluid flows through it, - and wherein the measuring instrument (10.1; 10.2) of each of the first and second measuring instruments comprises both an excitation arrangement, in particular formed by means of at least one electrical coil and / or by means of at least one (electrodynamic or piezoelectric) vibration exciter, electrically connected to the (measuring instrument) electronics (20.1; 20.2) of the respective measuring instrument, and a sensor arrangement, in particular formed by means of at least one (electrodynamic or piezoelectric) vibration sensor, signal-technically coupled to the (measuring instrument) electronics of the respective measuring instrument, in particular electrically connected; - wherein the excitation arrangement of each of the first and second measuring devices is configured to convert the supplied electrical (excitation) power into mechanical (measuring) power that is useful for producing a measuring effect dependent on at least one measured quantity (of the sensor), in particular non-electrical and / or forced mechanical (useful) vibrations of the sensor, - and wherein the sensor arrangement of each of the first and second measuring devices is configured to detect a measuring effect (of the measured material or of the measuring sensor) dependent on the at least one measured quantity, in particular (measured quantity dependent) mechanical vibrations of the measuring sensor, and to convert it into a (first) measuring signal (s1.1 ; s1.2) representing the same measuring effect, in particular a velocity of vibrational movements of the measuring sensor; - wherein the (measuring instrument) electronics (20.1 ; 20.2) of each of the first and second measuring instruments is set up to be operated at least temporarily in a respective first operating mode (1.1; I.2), - and wherein the (measuring instrument) electronics (20.1) of the first measuring instrument (M1) is set up, while the (measuring instrument) electronics (20.2) of the second measuring instrument (M2) is left to operate in its first operating mode (I.2), at least temporarily to be left to operate in a second operating mode (11.1); wherein the (measuring instrument) electronics (20.1 ; 20.2) of each of the first and second measuring instruments is set up in the respective first operating mode (1.1; I.2) - both to energize the respective excitation arrangement, namely to feed an electrical driver signal (e1.1 ; e1.2) into the respective excitation arrangement, in particular having a predefinable and / or an instantaneous (mechanical) resonance frequency fR of the respective sensor and / or a predefinable signal amplitude, such that at least one (physical) measurement effect dependent on the at least one measured quantity and detectable by the sensor arrangement is effected in the measured substance and that the respective measurement signal (s1.1 ; s1.2) is at least partially dependent on the respective measurement effect, in particular having a signal parameter dependent on the respective measured quantity, - and also to receive and evaluate the at least one (first) measurement signal (s1.1 ; s1.2), in particular to determine (digital) measured values ​​representing the respective at least one measured quantity (using the at least one measurement signal received during the first operating mode); - wherein, by means of the sensor of at least the second measuring instrument (M2) with (measuring instrument) electronics (20.2) operating in the first operating mode (I.2), a (first) disturbance (C-) is induced in the measuring instrument system, in particular superimposing the measurement effect caused by means of the sensor of the first measuring instrument (M1) and / or affecting the functionality of the measuring instrument system and / or impairing the measurement accuracy of the first measuring instrument (M1). - and wherein the same disturbance is transmitted to the first measuring device, in particular via pressure device or measuring substance carried therein, in such a way that the measuring signal (s1.1) of the sensor of the first measuring device (M1) is at least partially dependent on the (first) disturbance, in particular namely, in the case of (measuring device) electronics (20.2) of the second measuring device (M2) operating in its first operating mode (I.2), exhibits a signal parameter that depends on both the respective measured quantity and the (first) disturbance; - and wherein the (measuring) electronics (20.1) of the first measuring instrument (M1) is configured to receive and evaluate the at least one (first) measurement signal (s1.1) in its second operating mode (11.1), namely (using the at least one (first) measurement signal (s1.1) received during the second operating mode (11.1) to detect and / or quantify the (first) disturbance.

2. Measuring instrument system according to one of the preceding claims, - wherein the (first) disturbance is induced by the medium flowing through the sensor of the second measuring device; and / or - wherein the (first) disturbance in the medium guided in the sensor of the second measuring device is established pressure fluctuations or results from such pressure fluctuations; and / or - wherein the (first) disturbance is a (time-varying) magnetic field generated by the excitation arrangement of the second measuring device (M2), in particular with a (maximum) magnetic flux density of more than 100 pT (microtesla), which also partially penetrates the first measuring device (M1), or results from such a magnetic field; and / or - wherein the (first) disturbance results from, in particular, (forced) mechanical vibrations of the sensor of the second measuring device excited by means of the excitation arrangement of the second measuring device, in particular by coupling mechanical vibrations of the sensor of the second measuring device into the sensor of the first measuring device via pressure device.

3. Measuring instrument system according to one of the preceding claims, - wherein the (measuring instrument) electronics of the first measuring instrument (M1) are configured in the second operating mode (II) to determine, in particular to quantify, a time-varying component of a measurement error resulting from or representing the (first) disturbance; and / or - wherein the measuring instrument electronics (20.1) of the first measuring instrument (M1) is configured to adjust an (adaptive) filter for the measuring signal using at least one (first) measurement signal (s1.1) received during its second operating mode (11.1) or based on the detected disturbance, in particular such that the (first) disturbance in the measurement signal (s1.1) is suppressed or filtered out of the measurement signal (s1.1); and / or - wherein the (first) disturbance in the (first) measurement signal (s1.1) of the first measuring device causes a beat frequency, in particular dependent on a (frequency) difference between a signal frequency of the driver signal (e1.1) of the first measuring device (M1) and a signal frequency of the driver signal (e1.2) of the second measuring device (M2).

4. Measuring instrument system according to one of the preceding claims, wherein the electrical driver signal (e1.1 ) of the first measuring instrument has a signal frequency which differs from a signal frequency of the driver signal (e1.2) of the second measuring instrument by more than 0.01 Hz (Hertz), in particular not less than 0.5 Hz and / or not more than 10 Hz.

5. Measuring instrument system according to one of the preceding claims, wherein the electrical driver signal (e1.1 ; e1.2) of each of the first and second measuring instruments is at least temporarily configured as a square wave signal, in particular such that the electrical driver signal (e1.1) of the first measuring instrument has a clock rate (clock frequency) that differs from a clock rate of the driver signal (e1.2) of the second measuring instrument by less than 10 Hz.

6. Measuring instrument system according to one of the preceding claims, wherein the (measuring instrument) electronics of the first measuring instrument (M1) is configured in the second operating mode (11.1) - both the excitation arrangement and the Tnexd should not be energized for a set, in particular adjustable and / or not less than 1 s (second) duration. - as well as receiving and evaluating at least one, in particular not a (measured by means of the associated excitation arrangement) measurement effect and / or (merely) representing the (first) disturbance, (first) measurement signal (s1.1) in particular, namely (using the at least one (first) measurement signal (s1.1) received during the second operating mode) to detect and / or quantify the (first) disturbance.

7. Measuring instrument system according to the previous claim, wherein the time duration Tnexd is more than 5 s, in particular not less than 10 s, and / or more than 10 times, in particular not less than 50 times, a reciprocal of a (frequency) difference between a signal frequency of the driver signal (e1.1) of the first measuring instrument (M1) (provided in the first operating mode of the measuring instrument electronics of the first measuring instrument) and a signal frequency of the driver signal (e1.2) of the second measuring instrument (M2).

8. Measuring instrument system according to one of the preceding claims, further comprising: a control element connected to the measuring instrument electronics (20.1) of the first measuring instrument (M1) via a signal connection, in particular designed as a (combined) display and control element, for (local) input of (control) data useful for the control of the measuring instrument system and / or the (Re-)programming the measuring instrument electronics (20.1) includes the (configuration) data that is useful.

9. Measuring device system according to the preceding claim, wherein the measuring device electronics (20.1) of the first measuring device (M1) is configured to receive (control) data entered via operating element, in particular to execute control commands contained in the (control) data.

10. Measuring instrument system according to the preceding claim, wherein the measuring instrument electronics (20.1) of the first measuring instrument (M1) is configured to execute one or more control commands entered via the operating element, in particular to switch from the first operating mode to the second operating mode.

11. Measuring device system according to one of the preceding claims, further comprising: a display element connected to the measuring device electronics (20.1) of the first measuring device (M1) via a signal connection, in particular designed as a (combined) display and control element and / or having one or more light-emitting diodes (LEDs), for (local) display of (Measurement and / or operating) data of the measuring instrument system, in particular (digital) measured values ​​for at least one measured quantity and / or one or more (warning) messages signaling a malfunction of the measuring instrument system.

12. Measuring device system according to the preceding claim, wherein the measuring device electronics (20.1) of the first measuring device (M1) is configured to transmit (measurement and / or operating) data, in particular (digital) measured values ​​for the at least one measured quantity and / or (warning) messages signaling disturbances of the measuring device system, to the display element.

13. Measuring instrument system according to the preceding claim, - wherein the display element is configured to display (measurement and / or operating) data, in particular measured values ​​for at least one measured quantity, numerically, in particular alphanumerically; and / or - wherein the display element is configured to display (measurement and / or operating) data, in particular one or more (warning) messages signaling a fault in the measuring instrument system, in color coded form.

14. Measuring device system according to one of the preceding claims, wherein the measuring sensor of each of the first and second measuring devices has at least one (measuring) tube with a lumen enclosed by a wall, in particular made of metal, extending from a first (tube) end to a second (tube) end.

15. Measuring device system according to the preceding claim, wherein each of the (measuring) tubes of the first and second measuring devices is each configured to be supplied with measuring medium, in particular to be supplied with measuring medium and vibrated during this time.

16. Measuring device system according to one of the preceding claims, wherein the sensor of each of the first and second measuring devices comprises or is formed with a vibration element, in particular a tubular one.

17. Measuring instrument system according to the preceding claim, - wherein each of the vibration elements is configured to be contacted by a measuring medium, in particular by a flow around or through it, and to be vibrated during this time, in particular by performing at least partial (forced) mechanical vibrations with at least one (corresponding to an instantaneous resonance frequency fR of the respective sensor (10.1; 10.2) and / or not less than 50 Hz (Hertz) and / or not more than 2 kHz) useful frequency; and / or - wherein the vibration element of each of the first and second measuring instruments is configured (driven by the excitation arrangement) to perform at least partially (forced) mechanical vibrations with at least one, in particular an instantaneous resonance frequency fR of the respective sensor (10.1; 10.2) and / or not less than 50 Hz (Hertz) and / or not more than 2 kHz, when the (measuring instrument) electronics (20) are operating in the respective first operating mode (1.1; I.2), and / or such that the operating frequency of the vibration element of the second measuring instrument deviates from the operating frequency of the vibration element of the first measuring instrument by more than 0.1 Hz (Hertz), in particular not less than 0.5 Hz and / or not more than 10 Hz; and / or - wherein at least one (first) measurement signal (s1.1 ; s1.2) of each of the first and second measuring devices represents mechanical vibrations of the respective vibration element, in particular a velocity of vibrational movements of the vibration element; and / or - wherein the excitation arrangement of each of the first and second measuring devices has at least one, in particular electrodynamic or piezoelectric, vibration exciter, which vibration exciter is configured to convert electrical (excitation) power fed into the excitation arrangement into forced mechanical (useful) vibrations of the sensor, in particular a vibration element of the sensor around a static rest position, (actively) exciting mechanical power.

18. Measuring instrument system according to one of the preceding claims, - wherein, by means of the sensor of the first measuring instrument (M1) with (measuring instrument) electronics (20.1) operating in the first operating mode (1.1), a second disturbance is induced in the measuring instrument system, in particular superimposing the measurement effect caused by means of the sensor of the second measuring instrument (M2) and / or affecting the functionality of the measuring instrument system and / or impairing the measurement accuracy of the second measuring instrument. - and wherein the same second disturbance is transmitted to the second measuring device, in particular via pressure device or measuring substance carried therein, in such a way that the measuring signal (s1.2) of the sensor of the second measuring device (M2) is at least partially dependent on the second disturbance, in particular namely, when the (measuring device) electronics (20.1) of the first measuring device (M1) are operating in the first operating mode, exhibits a signal parameter that depends on both the respective measured quantity and the second disturbance.

19. Measuring instrument system according to the preceding claim, - wherein the (measuring) electronics of the second measuring instrument (M2) are set up, while the (measuring) electronics of the first measuring instrument (M1) are left to operate in its first operating mode (1.1), at least temporarily to be left to operate in a second operating mode (II.2); - and wherein the measuring instrument system electronics of the second measuring instrument (M2) is configured to receive and evaluate the at least one (first) measurement signal (s1.2) representing the second disturbance in its second operating mode (II), in particular to detect and / or quantify the second disturbance using the at least one (first) measurement signal (s1.2) received during the second operating mode.

20. Measuring instrument system according to the preceding claim, wherein the (measuring instrument) electronics of the second measuring instrument (M2) is configured in the second operating mode (II.2) - both the excitation arrangement and the Tnexc2 should not be energized for a set duration, in particular an adjustable and / or one of not less than 1 s (second). - as well as receiving and evaluating at least one, in particular not (by means of the associated excitation arrangement) measurement effect and / or (merely) representing the (second) disturbance, (first) measurement signal (s1) representing, in particular, namely (using the at least one (first) measurement signal (s1) received during the second operating mode) to detect and / or quantify the (second) disturbance.

21. Measuring device system according to one of the preceding claims, wherein the sensor (10.1) of the first measuring device and the sensor (10.2) of the second measuring device are connected in series (fluidically).

22. Measuring device system according to one of the preceding claims, wherein the sensor (10.1) of the first measuring device and the sensor (10.2) of the second measuring device are connected in parallel (fluidically).

23. Measuring instrument system according to one of the preceding claims, - wherein the sensors (10.1; 10.2) of the first and second measuring instruments are identical; and / or - wherein the measuring instrument system electronics (20.1; 20.2) of the first and second measuring instruments are identical; and / or - where the first and second measuring devices are identical in construction; and / or - wherein a minimum distance between the sensors of the first and second measuring devices is less than 50 m (meters), in particular not more than 20 m, and / or less than 200 times a maximum of the nominal diameters of the first and second measuring devices or their sensors, in particular such that a minimum distance between the sensor arrangement of the first measuring device and the excitation arrangement of the second measuring device is less than 20 m.

24. Measuring device system according to one of the preceding claims, wherein the sensor arrangement of each of the first and second measuring devices comprises at least one (electrodynamic, has an opto-electronic or piezo-electrical vibration sensor, which vibration sensor is configured to detect (forced) mechanical (useful) vibrations of the respective sensor, in particular of a (tubular) vibration element of the sensor around a static rest position, and to convert them into at least one (first) measurement signal (s1), in particular to provide an electrical (alternating) voltage suitable as a measurement signal (s1.1 ; s1.2).

25. Measuring device system according to the preceding claim, wherein the at least one vibration sensor of each of the first and second measuring devices is configured to detect mechanical vibrations of the respective associated measuring transducer, in particular of a (tubular) vibration element of the measuring transducer around a static rest position, and to convert them into the (first) measuring signal (s1.1 ; s1.2), such that the measuring signal (s1) represents mechanical vibrations of the respective measuring transducer, in particular a velocity of vibrational movements of a (tubular) vibration element of the measuring transducer.

26. Measuring device system according to one of the preceding claims, wherein the sensor of each of the first and second measuring device is configured to be at least temporarily subjected to a flow of the measuring substance.

27. Measuring device system according to one of the preceding claims, wherein the sensor of at least the first measuring device (M1) is configured to be temporarily, in particular for not less than 1 min, subjected to a cleaning fluid having a temperature of not less than 110°C and / or an electrical conductivity of not less than 5 pS / cm, in particular (sterile) water and / or an alkali, at a (reference) flow velocity of not less than 0.1 m / s.

28. Measuring device system according to the preceding claim, wherein the (measuring device) electronics of the first measuring device (M1) is configured to activate or keep activated the second operating mode (11.1) at least temporarily during the (local) cleaning of the sensor.

29. Measuring instrument system according to one of the preceding claims, wherein at least the The electronics (20.1) of the first measuring instrument (M1) are configured to receive and evaluate (externally generated) (process) data, in particular in such a way that the electronics (20.1) of the first measuring instrument (M1) can, on the basis of a parameter contained in the (process) data (Process status) message whose second operating mode is activated.

30. Measuring device system according to the previous claim, wherein the measuring device electronics (20.1) of the first measuring device (M1) is configured to activate its second operating mode (11.1) based on a (process state) message contained in the (process) data.

31. Measuring instrument system according to claim 30, - where the (process state) message indicates that the measured substance has a predetermined and / or stationary, in particular (constant) zero, (reference) volume and / or (Reference) mass flow through the sensor of the first measuring device (M1); and / or - wherein the (process state) message indicates that the measured substance, in particular with a predetermined and / or stationary (reference) volume and / or (reference) mass flow rate, flows through the sensor of the second measuring device (M2), in particular that the measured substance flows through the sensor of the second measuring device (M2) with a predetermined and / or stationary (reference) volume and / or (reference) mass flow rate and that no measured substance flows through the sensor of the first measuring device (M1) or that the measured substance flows through the sensor of the first measuring device (M1) with a (constant) zero (Reference) volume and / or (reference) mass flow rate flows; and / or - where the (process state) message indicates that the medium is not (currently) flowing in the sensor of the first measuring device, and therefore has a zero (reference) mass flow rate or (reference) volume flow rate, in particular that the medium is not (currently) flowing in the sensor of the first measuring device and that the medium is (currently) flowing through the sensor of the second measuring device; and / or - where the (process state) message indicates that a pump (integrated into the pressure device) controlling the mass or volume flow of the measured substance in the sensor of the first measuring device (M1) is not switched on; and / or - where the (process state) message indicates that a pump (integrated into the pressure device) controlling a mass or volume flow of the measured substance in the sensor of the second measuring device (M2) is switched on; and / or - where the (process state) message indicates that a mass or volume flow rate of the measured substance in the sensor of the first measuring device (M1) is controlled by a valve (integrated into the pressure device); and / or - where the (process state) message indicates that a mass or volume flow rate of the measured substance in the sensor of the second measuring device (M2) is controlled by a valve (integrated into the pressure device); and / or - where the (process state) message indicates that an in-situ (re-)calibration of the first measuring device (M1) can be started or has been started.

32. Measuring device system according to one of claims 1 to 31, wherein each of the first and second measuring devices is designed as a magnetic inductive flow meter (MID).

33. Measuring instrument system according to claims 30 and 32 - where the (process state) message indicates that a pump (integrated into the pressure device) controlling a mass or volume flow of the measured substance in the sensor of the first measuring device (M1) is switched on; and / or - where the (process state) message indicates that a mass or volume flow rate of the measured substance in the sensor of the first measuring device (M1) is controlled by a valve (integrated into the pressure device); and / or - wherein the (process state) message indicates that the measured substance, in particular with a predetermined and / or stationary (reference) volume and / or (reference) mass flow rate, flows through the sensor of the first measuring device (M1), in particular such that a flow velocity of the measured substance flowing through the sensor of the first measuring device (M1) is not less than 0.1 m / s and / or a (reference) volume flow rate is not less than 0.1 l / s (liters per second).

34. Measuring device system according to claim 32 or 33, wherein a minimum distance between the sensor arrangement of the first measuring device (M1) and the excitation arrangement of the second measuring device (M2) is less than 5 m, in particular less than 2 m.

35. Measuring device system according to one of claims 1 to 31, wherein each of the first and second measuring devices is designed as a Coriolis flow meter (CDM).

36. Measuring device system according to claim 35, wherein a minimum distance between the sensor arrangement of the first measuring device (M1) and the excitation arrangement of the second measuring device (M2) is more than 20 m, in particular not more than 50 m, and / or more than 50 times a maximum of the nominal diameters of the first and second measuring devices or their sensor (10).

37. Method for operating a measuring instrument system according to one of the preceding claims, comprising: - Activating the second operating mode of the (measuring instrument) electronics (20.1) of the first measuring instrument; - Activating the first operating mode (measuring instrument) electronics (20.2) of the second measuring instrument to generate the (first) disturbance (C-) of the measuring instrument system; - and using the (measuring) electronics (20.1) of the first measuring instrument to detect and / or quantify the (first) disturbance using the (first) measurement signal (s1.1) of the sensor (10.1) of the first measuring instrument.

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