Electronic vibration module of a modular measuring system and modular measuring system

Abstract

The present invention relates to a modular measuring system for measuring a measuring variable of a fluid substance to be measured, in particular an electronic vibrating module (VM) of a modular Coriolis mass flowmeter, comprising: - a measuring tube module (MM) having at least one metallic measuring tube (31, 32) for conducting the substance to be measured, in particular at least one measuring tube (31, 32) made of 1.4435 or 1.4404 (AISI 316L) stainless steel, - at least one exciter magnet (22), in particular at least one cylindrical exciter magnet, which is connected to the at least one measuring tube (31) and is designed to vibrate the measuring tube module (MM) when the measuring tube module is exposed to a time-varying magnetic field of an exciter coil (12), in particular of a base module (BM), - at least one sensor magnet (24), in particular at least one cylindrical sensor magnet, which is at least indirectly connected to the at least one measuring tube (31), and - a process connection (PA) comprising a process connection body (PAK) connected to the measuring tube module (MM), the process connection body (PAK) comprising plastic.

Description

Technical Field

[0001] This invention relates to a modular measurement system for measuring the measurement variables of a fluid substance to be measured, particularly an electronic vibration module of a modular Coriolis mass flow meter, and to a modular measurement system for measuring the measurement variables of a fluid substance to be measured, particularly a Coriolis mass flow meter. Background Technology

[0002] Field devices for process measurement technology, featuring vibration-type measuring sensors and, in particular, Coriolis mass flow meters, have been known for many years. The basic structure of such measuring devices is described, for example, in EP 1807681 A1, in which the structure of general field devices in the context of this invention is incorporated herein by reference in its entirety.

[0003] Typically, a Coriolis mass flow meter has at least one or more vibratory measuring tubes that can vibrate by means of a vibration exciter. These vibrations are transmitted along the length of the tube and vary depending on the type of flowable medium located in the measuring tube and its flow velocity. At another point in the measuring tube, a vibration sensor, or specifically two vibration sensors spaced apart from each other in the flow direction, can record the varying vibrations in the form of a measurement signal or multiple measurement signals. The evaluation unit can then determine the mass flow rate, viscosity, and / or density of the medium based on the measurement signals.

[0004] Modular Coriolis mass flow meters with replaceable disposable measuring tube modules are known. For example, WO 2011 / 099989 A1 teaches a method for producing an integral measuring tube module for a Coriolis mass flow meter with a curved measuring tube, wherein the measuring tube body of each measuring tube is initially solid and made of polymer, and then channels for guiding the flowable medium are excitedly formed therein. WO 2011 / 099989 A1 (similar to US 10,209,113 B2) teaches a connecting body configured to receive and support a replaceable measuring tube module with a thin-walled plastic tube. The measuring tube module is secured via the connecting body to a receiving module equipped with the necessary vibration exciter and vibration sensor.

[0005] DE 102019135303 A1 teaches a measuring sensor for a Coriolis mass flow meter, which includes a process connection made of plastic, such as polyetheretherketone (PEEK), polyaryletherketone (PAEK), polyphenylene sulfone (PPSU), polyethersulfone (PESU), polysulfone (PSU), or polyarylamide (PARA). A disadvantage is that with the aforementioned polymers, chlorine (present in the plastic as a substituent or as a byproduct) can be released during gamma sterilization and deposited on the measuring tube. Summary of the Invention

[0006] The purpose of this invention is to remedy this problem.

[0007] This objective is achieved by the electronic vibration module of the modular measurement system according to claim 1 and the modular measurement system according to claim 12.

[0008] A modular measurement system for measuring the measurement variable of a fluid substance, particularly an electronic vibration module according to the invention for a modular Coriolis mass flow meter, comprises: - A measuring tube module having at least one metal measuring tube for guiding the substance to be measured, particularly at least one measuring tube made of 1.4435 or 1.4404 (AISI 316L) stainless steel. - At least one exciter magnet, particularly at least one cylindrical exciter magnet, is connected to at least one measuring tube and is designed to cause the measuring tube module to vibrate when the measuring tube module is exposed to a time-varying magnetic field, particularly that of the exciter coil of the base module. - At least one sensor magnet, particularly at least one cylindrical sensor magnet, which is at least indirectly connected to at least one measuring tube. - A process connection section, which includes a process connection body that is at least indirectly connected to the measuring tube module. The process connection body includes plastic.

[0009] Advantageous developments of the invention are the subject of the dependent claims.

[0010] One implementation provides that the process connection body includes aromatic polycarbonate, particularly bisphenol A-polycarbonate.

[0011] One embodiment provides that the process connection body is made entirely of bisphenol A-polycarbonate, particularly of Makrolon® Rx1805.

[0012] One embodiment provides that the polycarbonate comprises Makrolon® Rx1805, Makrolon® Rx3440, Makrolon® Rx2235, Makrolon® 2458, Makrolon® Rx2530, Bayblend® M850 XF and / or Apec® 1745.

[0013] One embodiment provides that the process connection body is free of chemically and / or physically bound chlorine.

[0014] One embodiment provides that chlorine is chemically and / or physically incorporated into the plastic.

[0015] One implementation provides that the process linker comprises an aryl-SO2-aryl subunit, particularly polysulfone, polyethersulfone, or polyphenylsulfone.

[0016] One embodiment provides that the process connection includes a protective layer applied to the process connection body and designed to reduce the release of chlorine from the process connection body.

[0017] One embodiment provides that the measuring tube module includes a protective layer applied to at least one measuring tube and designed to protect at least one measuring tube from contact with chlorine.

[0018] One implementation provides that the protective layer comprises parylene, particularly parylene C.

[0019] One embodiment provides that the electronic vibration module meets ISO 10993-1 (2018) and / or USP. <88> Requirements for Category VI.

[0020] The modular measurement system of the present invention, particularly a Coriolis mass flow meter, for measuring the measurement variable of a fluid substance to be measured, includes: - An electronic vibration module according to the present invention; and - Base module, including: -- Electronic components of the measurement system; -- A shell having at least one chamber, which is at least partially surrounded by a shell wall. -- At least one exciter coil, which is particularly located inside the cavity of the housing and is particularly cylindrical and / or designed as an air coil, and is at least indirectly mechanically connected to the housing wall and electrically connected to the measurement system electronics, and -- At least one sensor coil, which is placed inside the cavity of the housing and is particularly cylindrical and / or designed as an air coil and / or structurally identical to the exciter coil, and is particularly positioned at a distance from the exciter coil, and is at least indirectly mechanically connected to the housing wall, and electrically connected to the measurement system electronics; The base module is configured to receive the electronic vibration module, particularly within a chamber, and is mechanically fixed but detachably connected to it, specifically to form a measuring sensor for a vibration type or vibration measurement system, and / or to lock the electronic vibration module within the base module or prevent it from being moved. The electronic vibration module is configured to be mounted in the base module such that its exciter magnet is placed inside the chamber but spaced apart from the housing wall, and is held in a static mounting position specified relative to the orientation and / or minimum distance from the exciter coil, and / or is held in such a static mounting position, and / or such that the imaginary longitudinal axis of the exciter magnet and the imaginary longitudinal axis of the exciter coil are aligned with each other or extend parallel to each other in the extension. Attached Figure Description

[0021] The invention will be explained in more detail with reference to the following figures. In the figures: Figure 1 : is a cross-section of an embodiment of the electronic vibration module of the modular measurement system; Figure 2 : is a partial cross-sectional view of an embodiment of the modular measurement system; and Figure 3a , Figure 3b : These are partial views of each embodiment of the electronic vibration module. Detailed Implementation

[0022] Figure 1 An embodiment of an electronic vibration module VM for measuring the measurement variables of a fluid substance is shown, particularly a modular Coriolis mass flow meter. In the context of this invention, the term "modular" refers to a structure consisting of multiple specific functional elements that can, but do not necessarily, be partially disassembled again.

[0023] The electronic vibration module VM includes a measurement tube module MM, which includes at least one metal measurement tube 31 for guiding the substance to be measured. This at least one measurement tube 31 can be, for example, made of 1.4435 or 1.4404 (AISI 316L) stainless steel. Additional metal components, such as a coupler 6 or a connecting plate 7, can be fastened to the at least one measurement tube 31 via its electronic vibration module VM and the base module (BM, see below). Figure 2 Mechanical contact occurs at the ends of the assembly. This allows the electronic vibration module VM to rest on the support surface of the base module, specifically the housing of the base module, via the connecting plate 7.

[0024] The electronic vibration module VM also includes at least one exciter magnet 22, particularly at least one cylindrical exciter magnet, which is at least indirectly connected to at least one measuring tube 31, and is designed to be exposed to, in particular, the base module (BM, see...) Figure 2 The exciter coil (12, see) Figure 2When a time-varying magnetic field is applied, the measuring tube module MM vibrates. The exciter magnet can be arranged in a magnet cup, which is then materially bonded to the outer surface of at least one measuring tube 31.

[0025] The electronic vibration module VM also includes at least one sensor magnet 24, particularly at least one cylindrical sensor magnet, which is at least indirectly connected to at least one measuring tube 31. The electronic vibration module VM of the illustrated embodiment includes two sensor magnets 24, 25 arranged in the measuring tube to be deflected in the flow direction of the substance to be measured.

[0026] The electronic vibration module VM also includes a process connection part PA with a process connection body PAK, which is connected to the measurement tube module MM and is designed to connect the measurement tube module MM to the process pipeline (e.g., a pipe system).

[0027] According to the invention, the process connection body PAK is at least partially, preferably entirely, made of plastic, while at least one measuring tube 31 is made of metal.

[0028] The process linker PAK can comprise aromatic polycarbonate, particularly bisphenol A type polycarbonate, preferably Makrolon® Rx1805 (ISO molding material designation: ISO 7391-PC,M,(,,)-09-9), or even be made entirely of bisphenol A type polycarbonate, particularly Makrolon® Rx1805 (ISO molding material designation: ISO 7391-PC,M,(,,)-09-9). Makrolon® Rx1805 is a brand name for a polycarbonate from Covestro AG, Kaiser-Wilhelm-Allee 60, 51373 Leverkusen, Germany (09 / 13 / 2021).

[0029] Alternatively or additionally, plastics may contain Makrolon® Rx3440. Makrolon® Rx3440 is the brand name of polycarbonate from Covestro AG, Kaiser-Wilhelm-Allee 6051373 Leverkusen, Germany (02 / 16 / 2023).

[0030] Alternatively or additionally, plastics may contain Makrolon® Rx2235. Makrolon® Rx2235 is a brand name for polycarbonate from Covestro AG, Kaiser-Wilhelm-Allee 6051373 Leverkusen, Germany (09 / 13 / 2021).

[0031] Alternatively or additionally, the plastic may contain Makrolon® Rx2530, (ISO 7391-PC,MR,(,,)-18-9). Makrolon® Rx2530 is a brand name for polycarbonate from Covestro AG, Kaiser-Wilhelm-Allee 6051373Leverkusen, Germany (02 / 09 / 2022).

[0032] Alternatively or additionally, the plastic may contain Makrolon® 2458 (ISO 7391-PC,MR,(,,)-18-9). Makrolon® Rx2458 is a brand name for polycarbonate from Covestro AG, Kaiser-Wilhelm-Allee 6051373 Leverkusen, Germany (02 / 09 / 2022).

[0033] Alternatively or additionally, the plastic may contain Bayblend® M850 XF. Bayblend® M850 XF is a mixture of polycarbonate and an acrylonitrile-butadiene-styrene copolymer from Covestro AG, Kaiser-Wilhelm-Allee 6051373 Leverkusen, Germany (12 / 14 / 2022).

[0034] Alternatively or additionally, plastics may contain Apec® 1745. Apec® 1745 is the brand name of polycarbonate from Covestro AG, Kaiser-Wilhelm-Allee 6051373 Leverkusen, Germany (11 / 18 / 2022).

[0035] The process linker PAK can be formed without chemically and / or physically bound chlorine. This requires ensuring that the polymer used does not contain any chlorine substituents or that chlorine is not used in the production of the polymer.

[0036] Alternatively, chlorine can be chemically and / or physically bound to the plastic. The chlorine can be organic or inorganic. Physically bound chlorine, within the meaning of this invention, is organic or inorganic chlorine held in a fixed position within the polymer matrix.

[0037] Alternatively or additionally, the process linker PAK can include aryl-SO2-aryl subunits, particularly polysulfone, polyethersulfone, or polyphenylsulfone.

[0038] If chlorine is present in the process connection body PAK, it is advantageous to apply a protective layer (SS1, see below). Figure 3a At least a portion of the outer surface MF1 of the process connection body PAK is applied. The protective layer SS1 is designed to reduce the release of chlorine from the process connection body PAK (e.g., during gamma sterilization). This prevents chlorine from being deposited on the inner and / or outer surfaces of at least one measuring tube 31.

[0039] Alternatively or additionally, the measuring tube module MM may include a protective layer (SS2, see below). Figure 3b The protective layer is applied to at least one measuring tube 31 and is designed to protect at least one measuring tube 31 from the effects of chlorine.

[0040] The protective layer S1 or the protective layer S2 can be a parylene layer, especially a parylene C layer, which is produced, for example, by a vapor deposition process.

[0041] The VM electronic vibration module meets ISO 10993-1 and / or USP standards from 2018. <88> The requirements of Category VI make it suitable for biomedical applications.

[0042] Figure 2 An example of a modular measurement system (MMS, particularly a Coriolis mass flow meter) for measuring the measurement variables of a fluid substance is shown.

[0043] The modular measurement system (MMS) includes a base module (BM), which comprises measurement system electronics (ME) and a chamber (11). The housing 11, the chamber 11 It is at least partially surrounded by the shell wall 11+.

[0044] Furthermore, the base module BM includes at least one actuator coil 12, which is specifically placed in the chamber 11 of the housing 11. Internally, and particularly cylindrical and / or designed as an air coil, the exciter coil is at least indirectly mechanically connected to the housing wall 11+ and electrically connected to the measurement system electronics ME.

[0045] Furthermore, the base module BM includes at least one sensor coil 14, which is specifically placed in the cavity 11 of the housing 11. Internally, particularly cylindrical and / or designed as an air coil and / or structurally identical to the exciter coil 12, the sensor coil is positioned at a distance from the exciter coil 12 and is at least indirectly mechanically connected to the housing wall 11+, and electrically connected to the measurement system electronics ME.

[0046] The base module BM is configured, particularly in chamber 11 The receiving electronic vibration module VM (see also) Figure 1 And is mechanically fixed but detachably connected to it, particularly forming a vibration type or vibration measurement system's measuring sensor and / or locking the electronic vibration module VM in the base module BM or preventing it from being moved. For this purpose, the base module BM can have a fastening device BV, through which a detachable flexural and / or non-flexural connection can be formed between the base module BM and the electronic vibration module VM.

[0047] In contrast, the electronic vibration module VM is configured to be mounted in the base module BM, such that its exciter magnet 22 is placed in the chamber 11. Inside, but spaced apart from the housing wall 11+, i.e., particularly held in a static mounting position specified relative to the orientation and / or minimum distance from the actuator coil 12, and / or held in such a static mounting position, and / or such that the imaginary longitudinal axis of the actuator magnet and the imaginary longitudinal axis of the actuator coil 12 are aligned with each other or extend parallel to each other in the extension.

[0048] According to the illustrated embodiment, the measuring tube module MM has two measuring tubes 31, 32 extending substantially parallel to each other. These will be referred to hereinafter as the first measuring tube 31 and the second measuring tube 32. The first measuring tube 31 and the second measuring tube 32 are curved. Alternatively, they can also be completely straight. Furthermore, the first measuring tube 31 and the second measuring tube 32—in this particular case—are connected to each other via six couplers 6 and a connecting plate 7.

[0049] The process connection PA is designed as a manifold VS, which is configured to distribute either the inlet channel EK or the outlet channel AK to the inlet or outlet of each of the first and second measuring tubes 31, 32. During operation of the modular measurement system MMS, the substance to be measured is fed from the production line through the inlet channel and distributed from there to the first and second measuring tubes 31, 32.

Claims

1. A modular measurement system for measuring the measurement variable of a fluid substance, particularly an electronic vibration module (VM) of a modular Coriolis mass flow meter, comprising: - A measuring tube module (MM) having at least one metal measuring tube (31, 32) for guiding the substance to be measured, particularly at least one measuring tube (31, 32) made of 1.4435 or 1.4404 (AISI 316L) stainless steel. - At least one exciter magnet (22), particularly at least one cylindrical exciter magnet, said at least one exciter magnet (22) is connected to at least one measuring tube (31) and is designed to cause the measuring tube module (MM) to vibrate when the measuring tube module is exposed to a time-varying magnetic field, particularly that of the exciter coil (12) of the base module (BM). - At least one sensor magnet (24), particularly at least one cylindrical sensor magnet, said at least one sensor magnet (24) being at least indirectly connected to said at least one measuring tube (31), - A process connection part (PA), said process connection part (PA) including a process connection body (PAK) that is at least indirectly connected to the measuring tube module (MM), The process connection body (PAK) comprises plastic.

2. The electronic vibration module (VM) according to claim 1, in, The process linker (PAK) comprises aromatic polycarbonate, particularly bisphenol A-polycarbonate.

3. The electronic vibration module (VM) according to claim 1 or 2, in, The process connection body (PAK) is made entirely of bisphenol A-polycarbonate, particularly Makrolon® Rx1805.

4. The electronic vibration module (VM) according to claim 2 or 3, in, The polycarbonate comprises Makrolon® Rx1805, Makrolon® Rx3440, Makrolon® Rx2235, Makrolon® 2458, Makrolon® Rx2530, Bayblend® M850 XF and / or Apec® 1745.

5. The electronic vibration module (VM) according to any one of the preceding claims, in, The process linker (PAK) does not contain chlorine that is chemically and / or physically bound.

6. The electronic vibration module (VM) according to any one of claims 1-4, in, Chlorination is chemically and / or physically incorporated into plastics.

7. The electronic vibration module (VM) according to claim 6, in, The process linker (PAK) comprises aryl-SO2-aryl subunits, particularly polysulfone, polyethersulfone, or polyphenylsulfone.

8. The electronic vibration module (VM) according to claim 6 or 7, in, The process connection (PA) includes a protective layer (SS1) that is applied to the process connection body (PAK) and is designed to reduce the release of chlorine from the process connection body (PAK).

9. The electronic vibration module (VM) according to any one of claims 6-8, in, The measuring tube module (MM) includes a protective layer (SS2) applied to the at least one measuring tube (31, 32) and designed to protect the at least one measuring tube (31, 32) from contact with chlorine.

10. The electronic vibration module (VM) according to claim 8 or 9, in, The protective layers (S1, S2) include parylene, particularly parylene C.

11. The electronic vibration module (VM) according to any one of the preceding claims, in, The electronic vibration module (VM) meets ISO 10993-1 (2018) and / or USP standards. <88> Requirements for Category VI.

12. A modular measurement system for measuring the measurement variable of a fluid substance, particularly a Coriolis mass flow meter, comprising: - An electronic vibration module (VM) according to any one of the preceding claims; as well as - A base module (BM), the base module (BM) comprising: -- Measurement system electronics (ME); -- Having at least one chamber (11 The housing (11), the at least one chamber (11) It is at least partially surrounded by the shell wall (11+). -- At least one actuator coil (12), said at least one actuator coil (12) being placed in particular in a chamber (11) of the housing (11). The internal and, particularly, cylindrical and / or air-coil design, is at least indirectly mechanically connected to the housing wall (11+) and electrically connected to the measurement system electronics (ME). -- At least one sensor coil (14), said at least one sensor coil (14) being placed in particular in the chamber (11) of the housing (11). Inside, and particularly cylindrical and / or designed as an air coil and / or structurally identical to the exciter coil (12), and particularly positioned at a distance from the exciter coil (12), and at least indirectly mechanically connected to the housing wall (11+), and electrically connected to the measurement system electronics (ME); The base module (BM) is configured particularly in the chamber (11) The electronic vibration module (VM) is received in the base module (BM) and is mechanically fixed but detachably connected thereto, particularly as a measuring sensor forming a vibration type or vibration measurement system and / or such that the electronic vibration module (VM) is locked in the base module (BM) or cannot be moved. The electronic vibration module (VM) is configured to be mounted in the base module (BM) such that its exciter magnet (22) is placed inside the cavity but spaced apart from the housing wall (11+), and is held in a static mounting position specified relative to the orientation and / or minimum distance from the exciter coil (12), and / or is held in the static mounting position, and / or such that the imaginary longitudinal axis of the exciter magnet and the imaginary longitudinal axis of the exciter coil (12) are aligned with each other or extend parallel to each other in the extension.

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