| Patents for G01F 25 - Testing or calibrating of apparatus for measuring volume, volume flow, or liquid level, or for metering by volume (5,338) |
|---|
| 03/09/1995 | WO1995006858A1 Self test apparatus for ultrasonic sensor |
| 03/08/1995 | EP0642000A2 Method for drift elimination in sensors |
| 03/07/1995 | US5394866 Automatic aerosol medication delivery system and methods |
| 03/02/1995 | DE4434264A1 Method for the automatic testing and maintenance of the metering accuracy of multicomponent metering installations |
| 03/01/1995 | EP0482103B1 Mobile calibrating apparatus for control of volume meters for liquid, especially propellant pumps in the traffic sector |
| 02/28/1995 | US5394093 Method and apparatus for testing vehicle engine sensors |
| 02/28/1995 | US5392768 Method and apparatus for releasing a controlled amount of aerosol medication over a selectable time interval |
| 02/28/1995 | US5392632 Small volume prover |
| 02/22/1995 | EP0639262A1 Device for testing the operability of a system for detecting heat-radiating particles carried in a particle stream. |
| 02/21/1995 | US5390541 Flow sensor incorporating cyclic relative motion between fluid flow and detecting element |
| 02/21/1995 | US5390528 Method and apparatus for calibrating a mass air flow sensor using an oscillating air flow |
| 02/09/1995 | DE4326374A1 Reference impedance for calibration of the pressure and flow measurement device of an apparatus for the oscillometric measurement of airway resistance |
| 02/08/1995 | EP0637270A1 Aerosol testing method |
| 01/26/1995 | WO1995002806A1 Calibrating flow meters |
| 01/25/1995 | CN2188199Y Water meter tester |
| 01/19/1995 | WO1995002166A1 Reagent system for calibration of pipettes and other volumetric measuring devices |
| 01/10/1995 | US5379637 Natural gas vehicle fuel gauge system |
| 01/10/1995 | US5379627 Tester for mass airflow sensor |
| 01/03/1995 | US5377524 Self-testing capacitive pressure transducer and method |
| 12/22/1994 | DE4319805A1 Apparatus for monitoring a filling volume |
| 12/21/1994 | EP0629844A1 Method and apparatus for testing overfill protection devices |
| 12/14/1994 | EP0628715A2 Engine control equipment and its air meter |
| 12/14/1994 | EP0628157A1 Pipette calibration system |
| 11/30/1994 | EP0626063A1 Microwave-operated level gauge. |
| 11/29/1994 | US5369603 Calibration of a non-linear sensor |
| 11/29/1994 | CA2097255A1 Automatic tester and calibrator for instruments or fluid meters |
| 11/24/1994 | DE4244761A1 Filling level measuring system and method for transmitting test signals in such a filling level measuring system |
| 11/15/1994 | CA1333099C Proportional chemical feeding systems |
| 11/02/1994 | EP0622616A1 Apparatus for measuring the level of an interface of a liquid with suspending particles |
| 10/27/1994 | DE4313385A1 Method and device for measuring the throughput of a flowing material |
| 10/06/1994 | DE4410855A1 Verfahren zum Kalibrieren des Zeitansprechvermögens eines Luft-Massenstrom-Sensors ohne Luftstrom A method for calibrating the Zeitansprechvermögens an air mass flow sensor without air flow |
| 09/28/1994 | EP0616792A1 Oscillometric determination of the airway impedance, by use of a standard impedance provided for the calibration of a pressure and flow measuring device |
| 09/28/1994 | EP0585386A4 Flow calibrator |
| 09/21/1994 | EP0596966A4 Time gate ultrasonic sensor and method. |
| 09/15/1994 | WO1994020825A1 Improvements in or relating to measurement of fluid flow velocity |
| 09/15/1994 | DE4307901A1 Calibration diaphragm having a defined leakage rate |
| 09/15/1994 | CA2156912A1 Improvements in and relating to measurement of fluid flow velocity |
| 09/14/1994 | EP0614519A1 Device for determining and/or monitoring a predetermined level of contents of a container. |
| 09/06/1994 | US5343732 Apparatus for determining the deviation in the level of liquid in a vessel |
| 08/30/1994 | US5342527 Sensors mounted at intake and outlet |
| 08/17/1994 | CN1025693C Periodic sampling compensation method of position measurement vibration interference |
| 08/09/1994 | US5335552 Device for accurately measuring mass flow of gases |
| 08/04/1994 | WO1994017369A1 Method and apparatus for sensing flow in two directions and automatic calibration thereof |
| 08/04/1994 | WO1994017368A1 Method and device for measuring the discharge in partly filled or completely filled ducts and in open channels |
| 07/19/1994 | CA1330726C Fluid metering system |
| 06/23/1994 | WO1994014037A1 Microwave-operated level gauge |
| 06/23/1994 | DE4242444A1 Testing and calibrating throughput vol. flow meter |
| 06/22/1994 | CN1025133C Testing method of eddy current flowmeter |
| 06/21/1994 | US5321992 Measurement of gas flows with enhanced accuracy |
| 06/15/1994 | CN2169124Y Tester for vortex train flow meter |
| 06/14/1994 | US5319964 Apparatus, method and system for monitoring fluid |
| 06/07/1994 | US5317895 Flowmeter proving apparatus |
| 06/07/1994 | CA1330000C Flowmeter |
| 06/01/1994 | EP0598932A1 Filling machine |
| 05/31/1994 | US5316444 Pump control and method of pumping |
| 05/24/1994 | US5315294 Fluid metering verification system |
| 05/24/1994 | US5314313 Water-sensing alarm for water-control systems |
| 05/19/1994 | DE4237902A1 Outlet device for flow measurement in ventilation systems - has housing with air inlet and air collection channel, calibration arrangement with tube contg. settling section |
| 05/19/1994 | CA2083238A1 Fluid metering verification system |
| 05/18/1994 | EP0596966A1 Time gate ultrasonic sensor and method |
| 05/17/1994 | US5311762 Flow sensor calibration |
| 05/04/1994 | EP0595389A1 Method of fabricating a liquid-tank equipped with a gauge, use of such a method for fabricating such a tank out of plastic material and resulting tank |
| 05/04/1994 | CN1086312A Testing instrumet for vortex street flow meter |
| 05/03/1994 | US5308341 Method of testing the dose accuracy of a medication delivery device |
| 05/03/1994 | US5307667 Response time test apparatus for a mass air flow sensor |
| 04/19/1994 | US5303585 Fluid volume sensor |
| 04/14/1994 | WO1994008215A1 Device for determining and/or monitoring a predetermined level of contents of a container |
| 04/14/1994 | WO1994008214A1 Device for determining and/or monitoring a predetermined filling level |
| 04/13/1994 | EP0591449A1 Apparatus for calibrating a multiple port pump |
| 04/05/1994 | US5299447 Air flow manifold system for providing two different mass air flow rates to a mass air flow sensor production calibration station |
| 04/05/1994 | US5299446 Method and apparatus for calibrating a multiple port pump |
| 03/31/1994 | WO1994003781A3 Liquid volume measuring apparatus |
| 03/31/1994 | DE4232719A1 Vibration fill-level limit switch - has level measurement device connected to remote evaluation circuit, and performs regular functional test cycles |
| 03/31/1994 | DE4232659A1 Vorrichtung zur Feststellung und/oder Überwachung eines vorbestimmten Füllstands in einem Behälter Apparatus for detecting and / or monitoring a predetermined level in a container |
| 03/29/1994 | US5298978 For determining the volume of a vessel using a photometer |
| 03/29/1994 | US5298886 Fluidic flowmeter equipped with a micro flow sensor |
| 03/15/1994 | US5294917 Liquid level sensor using float and magnetic means |
| 03/10/1994 | DE4232720C1 Function self-monitoring and measurement signal processor for vibration-fill-state limit switches - has parallel-working microprocessors each associated with pair of safety relays, which are switched-over for each self-test while maintaining connection state with external relay |
| 03/09/1994 | EP0585386A1 Flow calibrator |
| 03/03/1994 | WO1994004890A1 Flow meter |
| 03/02/1994 | EP0584242A1 Method and apparatus for translating a mass flow meter signal. |
| 02/17/1994 | WO1994003781A2 Liquid volume measuring apparatus |
| 02/17/1994 | DE4226813A1 Measuring fill level in vessel e.g. bottle - adjusting test voltage to reference probe fully immersed in one vessel, according to conductivity of measured liq. to set current, and applying test voltage to measurement probe to derive current signal |
| 02/17/1994 | DE4226391A1 Detecting zero-point drift for correcting vibration phase shift in Coriolis mass flow meter - measuring additional vibration characteristic parameters e.g. amplitude or DC components using light source-photosensor light valve and correcting using e.g. difference |
| 02/15/1994 | US5285673 Method for in-line calibration verification of mass flow meters |
| 02/09/1994 | EP0581896A1 Thermal mass flow sensor |
| 02/08/1994 | US5284046 Mobile calibrating apparatus for control of volume meters for liquid, especially propellant pumps in the traffic sector |
| 02/02/1994 | EP0581633A1 Device for measuring fuel consumption for automobile engines |
| 01/27/1994 | DE4233185C1 Vorrichtung zur Feststellung und/oder Überwachung eines vorbestimmten Füllstandes Apparatus for detecting and / or monitoring a predetermined level |
| 01/20/1994 | WO1994001764A1 Controller for ultrasonic sensors |
| 01/20/1994 | DE4323968A1 Value measurement appts. with non-linear sensor calibration - uses computing estimates of measurement parameter and it integral, correcting estimating relationship using separately measured actual integral values |
| 01/20/1994 | DE4223346A1 Contactless distance measurement arrangement using pulse=echo signals - uses neural network to evaluate transition time of transmitted and reflected signal |
| 01/19/1994 | EP0579559A1 Calibration method for a couple of transducers positioned in a dialysis circuit |
| 01/18/1994 | US5279601 Water seal water manometer |
| 01/13/1994 | DE4323305A1 Correcting sensor baseline drift e.g. for grain mass flow measurement - measuring parameter over selected finite time periods, using masks and averaging those having value lower than threshold |
| 01/13/1994 | DE4321709A1 Fluid quantity test system for IC engine fuel injection valve - has piston which reciprocates in and out of measurement chamber according to pressure, and optical triangulation system which detects light reflected by piston end |
| 01/11/1994 | US5277054 Apparatus for in-situ calibration of instruments that measure fluid depth |
| 01/05/1994 | EP0576762A1 Device for delivering a predetermined quantity of liquid |
| 12/31/1993 | CA2439742A1 Method for calibrating a pair of sensors in a dyalisis circuit |
| 12/28/1993 | US5272920 Apparatus, method and system for monitoring fluid |