127results about "Testing/calibration for volume metering" patented technology

The invention relates to the technical field of glass measuring tool verification, and particularly discloses a verification device and method for a glass measuring tool commonly used in a laboratory. The side wall of the movable base is rotationally connected with a movable lead screw. The movable screw rod is in threaded connection with a movable block; the side wall of the moving block is fixedly connected with a rotating motor; through the arrangement of the movable base and the fixed bin, the contact time of the hand and the glass measuring tool during verification is greatly shortened, the temperature rise of the glass measuring tool is effectively prevented, workers are assisted to verify the glass measuring tool, and according to the arrangement of the cleaning mechanism and the drying mechanism, the cleaning and drying work can be rapidly achieved, and the working efficiency is improved. And the verification efficiency is improved.

This present disclosure provides reliable methods and apparatus for delivering microdroplets containing an active pharmaceutical ingredient (API) to underlying substrates. A control system is provided to ensure that the API dosage is both accurate and repeatable.

Systems and methods are provided for dynamic calibration and correction of the stroke volume of a pump. During a fluid processing procedure, the change in volume of a fluid in a container associated with a volume measurement system is calculated for a plurality of time periods. The standard deviation of the plurality of changes in volume is calculated, with it being determined that the volume measurement system is operating correctly when the standard deviation is below a target threshold. Upon determining that the volume measurement system is operating correctly, the stroke volume of the pump is calculated and a target change in volume of the fluid in the container is compared to an actual change in volume. When there is a difference between the two changes in volume, a correction factor is calculated, with the operation of the pump being adjusted based at least in part on the correction factor.

The present invention relates to a compounding assistance device, comprising: a display; a controller programmed to guide a user of the compounding assistance device through a pharmaceutical compounding task using one or more prompts shown on the display; a carrier for supporting items; a visible light digital camera positioned to photograph at least a portion of the carrier from above; a source of visible light associated with the visible light digital camera and controllable by the controller to emit light during the taking of a photograph using the infrared digital camera, characterised by an infrared digital camera positioned to photograph at least a portion of the carrier from above; an infrared area light source positioned under the carrier; and a gantry spanning the carrier. The present invention further relates to a respective pharmaceutical compounding device.

A method for ascertaining at least one configuration of a metering device for buik goods to be metered. A method for obtaining a recommendation for a configuration of a metering device for buik goods to be metered, and devices for processing data are also provided.

Method for monitoring a state in a device (1) for metering and / or transferring material (53), wherein the device (1) has a stationary housing (3) with an inlet side (4) for supplying the material (53) and an outlet side (5) for dispensing metered quantities of the material (53), and a metering unit (7) with a metering chamber (12), and the method comprises the following steps: i) transferring the metering chamber (12) into a state temporarily closed with respect to the inlet side (4) and the outlet side (5), wherein the metering chamber (12) is bounded by at least one wall element (11) of the metering unit (7); ii) introducing a fluid, in particular a gas, into the metering chamber (12) in the closed state by means of a pressure generation unit (16) in order to increase the pressure (P) in the metering chamber (12); iii) Measuring the pressure (P) in the dosing chamber (12) with a pressure measuring unit (17);and iv) Determining the state of the device based on the measured pressure (P), in particular based on a pressure profile (27a, 27b).;

A system configured to determine the presence of an anomaly associated with a dispensing system component, a fluid supply, and / or a tool of a dispenser includes: a fluid supply for containing a fluid; the tool is used for supporting the part; one or more sensors configured to sense a characteristic of the dispensing system component, fluid supply, and / or tool; and a controller configured to actuate the one or more sensors to capture initial data associated with the dispensing system component, fluid supply, and / or tool at a first time, processing the initial data in a trained neural network to determine the presence of anomalies associated with the dispensing system components, fluid supplies and / or tools, recording the presence of anomalies, generating and sending an alert indicative of the presence of anomalies to a human-machine interface, the one or more sensors are actuated to capture subsequent data associated with the dispensing system component, fluid supply, and / or tool at a second time after the first time, and the subsequent data are processed to determine whether the anomaly has been corrected.

Method (100) for classifying coatings (230) in a measuring tube (200), comprising: determining (110) a damping value D for at least one vibration mode of an oscillator with at least one measuring tube (200) of a Coriolis mass flow sensor for guiding a medium (220); determining (120) a modal stiffness value k for at least one vibration mode; and classifying (150) the coating (230) as a function of the damping value D and the stiffness value k.

A metering bank for an air cart. The metering bank includes metering bank frame and a plurality of meter modules disposed laterally adjacent to one another in the metering bank frame. Each of the plurality of meter modules is independently removable from the metering bank in a direction generally parallel with the forward direction of travel of the air cart. Each of the plurality of meter module includes a metering mechanism.

Microdosing system (100, 300) for dosing a quantity of fluid to be dispensed, comprising: a micropump (101) having an inlet (102) and an outlet (103) and designed to draw in the fluid (104, 105, 109) to be discharged through the inlet (102) and to discharge at least part of the fluid (104, 105, 109) from the outlet (103), a first flow sensor (106a, 106b) arranged on the inlet or outlet side, which has an opening (107a, 107b) and a flow meter (108a, 108b), wherein the flow meter (108a, 108b) is configured to determine the flow rate of the fluid (104, 105) passing through this opening (107a, 107b), and means (113, 313) for calibrating and / or interfering detection of the microdosing system (100, 300), wherein the means (113, 313) for calibrating and / or detecting disturbances of the microdosing system (100, 300) comprise a control device (302) configured to detect an actual sensor signal of the first flow sensor (106a, 106b) when the micropump (101) is inactive, and to correct subsequent sensor signals of the first flow sensor (106a, 106b) based on this in order to counteract sensor drift of the first flow sensor (106a, 106b) and to calibrate the microdosing system (100, 300).

Method for calibrating at least one conveying device (1) for conveying liquid (9) and / or air (7) of a metering device (32) for metering a liquid (9) from at least one container (3) to at least one outlet (29), in particular to at least one induction distributor (46) and / or at least one target device (45), by means of the at least one conveying device (1), wherein a detection area (14) of at least one detector (15) for distinguishing between liquid (9) and air (7) is arranged between the at least one container (3) and the at least one outlet (29), wherein at least one data carrier (48) is arranged in or on the at least one container (3) on which the initial volume (13) of liquid (9) in the container (3) is stored, comprising the following method steps: - reading the initial volume (13) from the at least one data carrier (48) and transferring it to the metering device (32),- Starting the pumping of liquid (9) and / or air (7) by triggering the at least one pumping device (1) at a start counting point (33), - Detection of a change from liquid (9) to air (7) in the detection range (14) by the at least one detector (15) at an air detection counting point (39), - Use of the initial volume (13) as a reference volume and use of a calibration counting range (42) based on at least the air detection counting point (39) to calibrate the at least one pumping device (1).

An air cart having a modular metering system. The modular metering system includes a plurality of meter modules disposed laterally adjacent to one another in a metering bank. Each of the meter modules is independently removable from the metering bank. Each meter module includes a metering mechanism rotatable about a longitudinal axis disposed generally parallel with a forward direction of travel of the air cart. The metering mechanism is in communication with a supply of product held within a tank. As the metering mechanisms rotates about its longitudinal axis, the product is metered by the metering mechanism into an air tube associated with each of the plurality of meter modules. An air stream provided by at least one fan carries the metered product through the air tubes.

A method for controlling a device using a shape-memory alloy wire is disclosed. The method includes determining an ontime for the shape-memory alloy wire based on a target volume to be pumped by a pump plunger, determining the temperature of the shape-memory alloy wire and adjusting the ontime based on the temperature of the shape-memory alloy wire.

The present invention involves: dissolving a dye in a volatile liquid to prepare a dye-containing volatile liquid that contains the dye at a predetermined concentration (step 11); suctioning the dye-containing volatile liquid by a dispenser and discharging the same into a measurement vessel (step 12); drying the dye-containing volatile liquid discharged into the measurement vessel (step 13); adding, after the drying, a predetermined amount of a low-volatile liquid having a volatility lower than that of the volatile liquid to the measurement vessel to dissolve the dye and prepare an assessment liquid (step 14); conducting an optical measurement on the assessment liquid (step 15); and determining a discharged amount that is the volume of the dye-containing volatile liquid discharged into the measurement vessel, on the basis of a measured value of the assessment liquid obtained by the optical measurement, the added amount of the low-volatile liquid, and the concentration of the dye in the dye-containing volatile liquid (step 16). As a result, the amount of a volatile liquid dispensed by a dispenser such as a micropipette can be accurately measured.

A method and apparatus for measuring the volume of liquid contained in a syringe having a barrel) with a barrel flange and a barrel bottom surface and plunger with a plunger flange. An image of the syringe is captured and processed to determine a length dimension of the syringe that is characteristic of its model. The length dimension determined from the image processing is used to look up the syringe model in a dataset that stores the relevant length dimension for each syringe model. The dataset also stores, for each syringe model, calibration values representing the volume of liquid contained in the syringe at each of at least two plunger positions. The volume of liquid held in the syringe can be determined from the plunger position obtained by processing the image, more specifically from the distance between the barrel flange or barrel bottom surface and plunger flange.

A method is for producing individual dosing quantities of a powdered product via a drum dosing device. A dosing drum has a dosing opening on its circumference. In an ejection position, an ejection process is effected, the dosing opening being subjected to a positive pressure and the dosing quantity being thereby ejected from the opening, and an associated ejection reference time-point being determined. The individual mass of an ejected dosing quantity and an associated measurement reference time-point are determined via the measuring device. An actual time period is ascertained from the difference between the measurement reference time-point and the ejection reference time-point and compared with a specified time period. In dependence on the comparison, an adaptation of the positive pressure for a subsequent ejection process is performed such that the level of the positive pressure is increased if the actual time period is too great.

The invention relates to a method for ascertaining at least one configuration of a metering device for bulk goods to be metered, to a method for obtaining a recommendation for a configuration of a metering device for bulk goods to be metered, and to devices for processing data.

An example container for collecting bulk material dispensed from a meter during a calibration operation may include a canister comprising an open end to receive bulk material, a coupler configured to releasably couple to a meter, and at least one weight sensor extending between the enclosure and the coupler. The weight sensor may be configured to detect weight of the bulk material deposited into the enclosure via the open end.

A dye-containing volatile liquid containing a dye at a predetermined concentration is prepared by dissolving the dye in a volatile liquid (step 11); the dye-containing volatile liquid is sucked by a dispenser and dispensed into a measurement container (step 12); the dye-containing volatile liquid dispensed into the measurement container is dried (step 13); after the drying, a predetermined amount of a low-volatility liquid having volatility lower than the volatility of the volatile liquid is added to the measurement container to dissolve the dye, thus preparing an evaluation liquid (step 14); optical measurement is performed on the evaluation liquid (step 15); and the dispensing amount which is a volume of the dye-containing volatile liquid dispensed into the measurement container is determined based on a measured value of the evaluation liquid by the optical measurement, an amount of the low-volatility liquid added, and a concentration of the dye in the dye-containing volatile liquid (step 16). This makes it possible to accurately measure the dispensing amount about a volatile liquid of a dispenser such as a micropipette.

The measuring tube module (M1) comprises a tube (11) with a lumen (11*) enclosed by a wall and extending from a first (tube) end to a second (tube) end, first and second measuring electrodes (21, 22) positioned on and / or in the wall of the tube for tapping electrical potentials established within a measuring substance located in the lumen of the tube, at least one electrical coil (31) mechanically connected to the tube for generating and / or detecting a magnetic field (H), and coil electrodes (311, 312) positioned on and / or in the wall of the tube and electrically connected to the coil. The measuring tube module can also be a component of a modular system or be used to form a modular (flow) measuring device suitable for measuring at least one measured quantity of an (electrically conductive) liquid substance flowing in a process line and / or a test arrangement for a basic module (M2) of the modular system (M1, M2).

Assembly (1) comprising a pressurized fluid distribution distributor (2) and a simulator (3) of a tank to be filled from the distributor (2), the simulator (3) comprising a transfer line connected to the distributor (2) and comprising a pressure controller (PCV1), the pressure controller (PCV1) being configured to regulate a pressure and / or a flow rate of a fluid stream passing through the pressure controller (PCV1), so as to simulate a pressure rise in the tank to be filled, the distributor (2) and the simulator (3) comprising respectively a primary flow meter (FE0) and a secondary flow meter (FE2), the primary flow meter (FE0) being configured to estimate a first quantity of a fluid stream supplied to the pressure controller (PCV1) and thus to the tank simulated by the pressure controller (PCV1), the secondary flow meter (FE2) being disposed on the transfer line, downstream of the pressure controller (PCV1),and configured to measure a second quantity of the fluid flow supplied to the pressure controller (PCV1) and thus to the reservoir simulated by the pressure controller (PCV1), characterized in that the simulator (3) also comprises a programmable electronic control unit (PLC) configured to compare the second quantity of the fluid flow with the first quantity of the fluid flow, so as to verify the reliability of the first quantity of the fluid flow. Abstract figure: Fig. 1,

The invention relates to a test method for testing the function of an electrically operated proportional valve (1) designed as a magnetic valve for metering a gaseous medium, such as hydrogen, comprising a closing element (2) which closes the proportional valve (1) when the closing element (2) is lifted from a valve seat (5). The closing element completely or partially opens the opening cross section according to the electrical actuation of the closing element, and the stroke of the closing element (2) is limited by a stroke stop (10) away from the valve seat (5). In order to simplify and / or improve the functional test of an electrically actuated proportional valve (1), an electrical functional test is carried out instead of a conventional pneumatic functional test without flowing through the proportional valve (1), and some design parameters are identified and checked by the electrical functional test without flowing through the proportional valve (2), the design parameters can also be identified and checked using conventional pneumatic functional tests.

A procedure for verifying a pipette, wherein the result of verification is a release or warning message, the procedure comprising the following steps: providing a liquid measuring container for receiving the liquid volume of the pipette to be verified; a weighing sensor connected to the liquid measuring container in a force-transmitting manner, the weighing sensor outputting a measurement signal corresponding to the gravity acting on the weighing sensor; and a processing unit for detecting and processing the measurement signal of the weighing sensor; determining a first gravity at a time point from the stable measurement signal, and determining a second gravity at a time point; calculating the liquid volume of the pipette; assigning the calculated liquid volume of the pipette to one of at least one pipette volume class having a defined nominal value; having the processing unit test whether the absolute value of the volume difference is within the tolerance value of the nominal value of the assigned pipette volume class; and having the processing unit output the test result.

Systems and methods for preparing medications, such as for intravenous delivery. The device includes an infrared camera and an infrared light source, and can backlight and photograph items such as syringes under infrared light to improve clarity. A visible light camera, such as a color digital camera, can also be provided to record other parts of the preparation process. The device can have other sensors, such as a barcode scanner and a weight sensor, for collecting other data about the preparation process. In an example implementation, the device is a preparation assistance device that uses instructions displayed on a display to guide the user of the device to complete the preparation task. In other embodiments, the device can be a robot.

A monitoring apparatus that monitors an operation of a fluid dispensing system. The fluid dispensing system includes at least one storage unit, a dispensing arrangement, and a pumping arrangement for providing a flow of the fluid from to the dispensing arrangement. The monitoring apparatus includes a sensing arrangement that is connected to the fluid dispensing system, wherein the sensing arrangement measures operational performance of the flow of the fluid dispensed through the dispensing arrangement and a server arrangement communicably coupled to the sensing arrangement via a data communication network. The server arrangement acquires the operational performance of the flow of the fluid dispensed, generates an actionable information for adjusting optimal dispensing of the fluid and provides the actionable information to a user device to report an operational status of the fluid dispensing system.

Assembly (1) comprising a distributor (2) for distributing pressurised fluid and a simulator (3) of a tank to be filled from the distributor (2), the simulator (3) comprising a transfer line connected to the distributor (2) and comprising a pressure controller (PCV1), the pressure controller (PCV1) being configured to regulate a pressure and / or a flow rate of a fluid flow passing through the pressure controller (PCV1), so as to simulate a pressure rise in the tank to be filled, the distributor (2) and the simulator (3) respectively comprising a main flow meter (FEO) and a secondary flow meter (FE2), the main flow meter (FEO) being configured to estimate a first quantity of a fluid flow supplied to the pressure controller (PCV1) and therefore to the tank simulated by the pressure controller (PCV1), the secondary flow meter (FE2) being arranged on the transfer line, downstream of the pressure controller (PCV1), and configured to measure a second quantity of the fluid flow supplied to the pressure controller (PCV1) and therefore to the tank simulated by the pressure controller (PCV1), characterized in that the simulator (3) also comprises a programmable electronic control member (PEC) configured to compare the second quantity of the fluid flow with the first quantity of the fluid flow, so as to verify the reliability of the first quantity of the fluid flow.

A silo content monitoring system 100 for a silo 102 fitted with a rotatable discharge auger 114, 118, comprises a strain gauge 150 affixed to at least one of the support struts 124 supporting the silo

The invention is achieved by a volumetric displacement calibration device (1) configured to be able to adapt at least one suction system (1000), comprising a tip (1006), having a volume VP, connected to a shaft (1003) comprising a volume change mechanism (1002). The device (1) comprises at least one main chamber (10) and one reference chamber (20), connected by a conduct (100) and a valve (102) to said main chamber (10) and at least one first pressure sensor (12) connected to said main chamber (10). The device (1) comprises also a second pressure sensor (22) connected to said reference chamber (20). The pressure sensors and calculation means allow to calculate an internal volume Vo, being the sum of the volume VP of said aspiration tip (1006), the volume (1005) of the shaft (1003) when the volume change mechanism (1002) is down. The invention is also achieved by a system (2) comprising the device (1) and at least one suction system (10001- 1000n) adapted to said device (1). The invention relates also to a calibration method of a volumetric fluid handling system (2) and comprising successive steps (a-m) to determine said volume Vo.

A system for determining the presence of fluid or air in a transparent tube in a drug preparation device is provided. [Solution] The system includes a processing circuit (PC) configured to receive a camera image of the transparent tube, where the transparent tube is positioned in front of a patterned background from the camera's perspective, whereby one or more regions of the transparent tube are depicted in the received image, each depicted region being associated with a respective refractive index of the patterned background; identify one or more of the regions of the transparent tube in the received image using image processing techniques; and determine characteristics of the contents of the transparent tube from at least one or more of the identified regions.

In a method for selecting a metering device (1) and determining operating parameters for metering a bulk material (2) with unknown flow properties using said metering device (1), an optical image of a specified quantity of the bulk material (2) is recorded in a reference environment (4). Geometric parameters of the bulk material (2) are determined on the basis of the optical image. A user is guided by a dialogue with an input module of an electronic data processing device. A characteristic variable for the flow properties of the bulk material (2) is determined using a machine learning method and on the basis of the determined geometric parameters and the responses of the user. The user inputs a desired conveying rate for the bulk material (2) via the input module and receives a suggestion for a suitable metering device (1) and for suitable operating parameters for metering the bulk material (2), the operating parameters being based on the determined characteristic variable for the flow properties and the desired conveying rate.