Patents
Sitemap › G01 - Measuring; Testing › G01F - Measuring volume, volume flow, mass flow, or liquid level; Metering by volume › G01F 1 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
Patents for G01F 1 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow (42,661)
04/1991
04/23/1991US5009109 Flow tube drive circuit having a bursty output for use in a coriolis meter
04/23/1991CA1283304C Measuring flow in a pipe
04/18/1991WO1991005225A1 Improvements in and relating to electromagnetic flowmeters
04/18/1991WO1991005224A1 Vortex flowmeter with balanced vortex sensor
04/18/1991DE3932735A1 Arrangement for detecting flow quantities in gas meters - has flow driven element with alloy wire moved past sensor coil in static magnetic field
04/17/1991EP0422317A1 Apparatus for detecting fluid currents through a conduit
04/17/1991EP0421988A1 Flow sensor
04/16/1991US5007453 Fluid flow control device
04/16/1991US5007286 Solid-state transducer based dynamic fluid flow sensing system
04/11/1991DE4025883A1 Differential pressure manometer and thermal meter - has membrane maintained in position by capacitor whose voltage is proportional to thermal medium flow rate
04/11/1991DE3932304A1 Controlling temp. of measurement resistance - is for measuring engine induced air flow, involves heating above operating temp. during no-flow phases
04/10/1991EP0421915A1 Device for measuring the uroflow of a patient
04/10/1991EP0421844A1 Nuclear oxygen activation method and apparatus for detecting and quantifying water flow
04/10/1991EP0421812A1 Improved coriolis-type flowmeter
04/10/1991EP0421585A2 Zero point offset compensating circuit
04/10/1991EP0421465A2 Doppler flow sensing device and method for its use
04/10/1991EP0421111A2 Measuring system to determine the progression rate of bulk material
04/10/1991CN2074905U Circulation display device for ultrasonic wave flowmeter
04/09/1991US5006421 Metalization systems for heater/sensor elements
04/09/1991US5005428 Inverted weir for conduit
04/09/1991US5005427 Karman vortex flowmeter with signal waveform shaper circuit
04/09/1991US5005426 Mass-volume vortex flowmeter
04/09/1991US5005425 Vortex flowmeter
04/09/1991CA1282867C Thin film orthogonal microsensor for air flow and method
04/09/1991CA1282614C Sensor mounting for coriolis mass flow rate meter
04/06/1991CA2026795A1 Doppler flow sensing device and method for its use
04/04/1991WO1991004462A2 Liquid counter
04/04/1991DE4029243A1 Fluid flow speed measuring appts. - has two excitation coils on outer surface of joining pipe assigned to ends of locating coil
04/04/1991DE3931960A1 Fluessigkeitszaehler Fluessigkeitszaehler
04/03/1991EP0420496A1 Improvements in and relating to electromagnetic flowmeters
04/03/1991EP0420442A2 Method and apparatus for determining air mass in an engine
04/03/1991EP0420109A1 Method and apparatus for mass flow measurement in a duct with multiphase flow
04/03/1991EP0419798A1 Volume flow measuring device for radial fan
04/03/1991EP0419469A1 Method and arrangement for measuring gas flow parameters
04/03/1991CN1050438A Electromechanical non-destructive flow tester
04/02/1991US5005144 Signal processing system for flow velocity in laser doppler velocimeter
04/02/1991US5004152 Acoustic monitoring of two phase feed nozzles
04/02/1991US5003828 Flowmeter for gases
04/02/1991US5003827 Piezoelectric differential pressure vortex sensor
04/02/1991US5003822 Acoustic wave microsensors for measuring fluid flow
04/02/1991US5003810 For use in domestic gas metering
04/02/1991CA1282500C Flow measurement
04/02/1991CA1282261C Method and apparatus for measuring fluid flow
04/02/1991CA1282258C Flow rate determination
03/1991
03/28/1991DE4025644A1 Heat-sensitive flow sensor with bridge circuit - comprising resistor formed on substrate placed in stream path
03/28/1991DE3931308A1 Controlling temp. of heated measuring resistor - taking into account change in working temp. during evaluation of measuring voltage
03/27/1991EP0419277A1 Guide wire for use in measuring a characteristic of liquid flow in a vessel
03/27/1991EP0418224A1 Transducer device operating with ultrasound for the measurement of the flow velocity of a fluid in a pipe.
03/27/1991CN2074010U Metering device of bulk material inside of pipe
03/27/1991CN2074009U Inserted type optical fiber turbine flowmeter
03/27/1991CN2074008U Universal disassemble water meter
03/27/1991CA2025572A1 Vortex flowmeter with balanced vortex sensor
03/26/1991US5002140 Method of and apparatus for weighing a continuous stream of fluent material
03/26/1991US5002090 Flow detector
03/26/1991US5001936 Mounting structure for transducers
03/23/1991CA2330649A1 Apparatus, system and method for measuring volumetric flow of blood in a vessel
03/21/1991WO1991004463A1 Conversion circuit for an electromagnetic flow transmitter
03/21/1991WO1991003713A1 Apparatus and method for measuring mass flow and density
03/21/1991DE4026460A1 Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics
03/21/1991CA2306666A1 Conversion circuit for an electromagnetic flow transmitter
03/20/1991EP0418033A1 Electromagnetic flowmeter
03/20/1991EP0417984A1 Method and apparatus for determining engine exhaust backpressure
03/20/1991EP0417317A1 Differential pressure gauge
03/20/1991EP0261123B1 Integrated flow meter and method for producing it
03/20/1991CN1050086A Frequency synchronization of electronics for vortex shedding flowmeter
03/19/1991US5000050 Mass-flow sensor using aerodynamic damping
03/19/1991US5000041 Control apparatus for turbine-type flow meter
03/19/1991US5000039 Internal combustion engine
03/19/1991CA1281557C Two-wire 4-20 ma electronics for a fiber optic vortex shedding flowmeter
03/13/1991EP0417058A1 Force transmitting mechanism for a vortex flowmeter
03/13/1991EP0416877A2 Frequency synchronisation
03/13/1991EP0416866A1 Electromagnetic flowmeter utilizing magnetic fields of a plurality of frequencies
03/13/1991EP0416808A1 System for determining a rate of flow of liquid through a conduit
03/13/1991CN2073107U Flow variable conveyer with scraper
03/12/1991US4999117 Monitoring method for wastewater pump station and compatible apparatus
03/12/1991CA1281209C Drain manifold for air data sensor
03/12/1991CA1281202C Flowmeter with electronically adjustable measurement module and display
03/09/1991CA2024842A1 Force transmitting mechanism for a vortex flowmeter
03/07/1991DE3929381A1 Combination water meter for large and small flows - has changeover valve for Woltmann meter and auxiliary meter operated according to flow rate
03/06/1991EP0415476A2 Metering arrangement
03/06/1991EP0415129A2 Method and device to measure mass-flow
03/05/1991US4996889 Electromagnetic flowmeter
03/05/1991US4996886 Differential pressure transmitter and a square root extracting device therefor
03/05/1991US4996885 Differential pressure transmitter, a square root extractor
03/05/1991US4996883 Orbital-element flow sensors
03/05/1991US4996876 Microrheoscopic detector for gas flows
03/05/1991US4996871 Coriolis densimeter having substantially increased noise immunity
03/05/1991CA1280912C On line replaceable sensor assembly for a vortex shedding flowmeter
03/05/1991CA1280911C Fluid flow sensor
03/02/1991CA2022961A1 Method and apparatus for determining a rate of flow of blood for an extracorporeal blood therapy instrument
02/1991
02/27/1991EP0414176A1 Heat meter
02/27/1991EP0414156A2 Beverage dispensing system
02/27/1991CN2072216U Inside spin type electronic meter
02/27/1991CN2072215U Ceramic electromagnetic flow meter
02/27/1991CN2072214U Pressure-gradient corrector for flow
02/26/1991WO1991002947A1 Device for measuring the flow of a gas containing particulates
02/26/1991US4995423 Valve and arrangement for fire suppression water sprinkler system
02/26/1991US4995269 Vortex flowmeter having an asymmetric center body
02/26/1991US4995268 Method and apparatus for determining a rate of flow of blood for an extracorporeal blood therapy instrument
02/26/1991US4995258 Method for determining air mass in a crankcase scavenged two-stroke engine
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