Patents
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)
01/1990
01/30/1990CA1265199A1 Electromagnetic flowmeter with capacitance type electrodes
01/25/1990WO1990000723A1 Process and arrangement for flow measurement by means of ultrasonic waves
01/25/1990DE3909177A1 Arrangement for measuring the rate of flow in the case of the pneumatic and hydraulic conveyance of fine (small) grained bulk materials
01/25/1990DE3824929A1 Device for measuring the fluid quantity in a flow channel
01/25/1990DE3824351A1 Mass flowmeter
01/24/1990EP0352203A2 Method and apparatus for simultaneously measuring in a pipe the density, the concentration, the flowing rate, the delivery and the temperature of a liquid or a pasty fluid by ultrasonic transmission
01/23/1990US4895616 Semiconductors
01/23/1990US4895031 Sensor mounting for coriolis mass flow rate meter
01/23/1990US4895030 Process for the measurement of weight flow-rates and related devices
01/23/1990US4895020 Air flow rate meter for internal combustion engines
01/18/1990DE3922403A1 Gas burner fed with a combustible-gas/air mixture
01/18/1990DE3823614A1 Method and installation for flow measurement
01/17/1990EP0351042A1 Fluid flow sensor
01/17/1990EP0350712A1 Method and device for measuring a mass flow
01/17/1990EP0156855B1 Small line-size vortex meter
01/16/1990US4894808 Flow noise reduction
01/16/1990US4893496 Torsional wave fluid sensor and system
01/11/1990WO1990000248A1 A fluid flow meter
01/11/1990DE3823177A1 Ultrasonic flow measurement using the evaluation of phase shifts
01/11/1990DE3821967A1 Shut-off device for twin-tube gas meters, and electronic gas meter
01/10/1990CN2050967U Multi-function combined flow and heat quantity measuring equipment
01/09/1990US4892114 Flow-sensing shutoff valve
01/09/1990US4892072 System for measuring amount of air introduced into combustion chamber of internal combustion engine with avoiding influence of temperature dependent air density variation and pulsatile air flow
01/09/1990US4891991 Coriolis-type mass flowmeter
01/09/1990US4891990 Vortex flowmeter transducer
01/09/1990US4891989 Vortex flow meter
01/09/1990US4891988 Vortex flowmeter
01/09/1990US4891978 Apparatus for measuring the mass of a flowing medium and method for producing an apparatus for measuring the mass of a flowing medium
01/09/1990US4891977 Microbridge sensor bonding pad design for improved adhesion
01/08/1990EP0288514A4 Fiber optic sensor apparatus.
01/08/1990EP0267956A4 Index-sight.
01/04/1990DE3919299A1 Corrugated diaphragm
01/04/1990DE3818418A1 Float flow meter
01/03/1990EP0349174A1 Thermal flux mass flowmeter
01/03/1990EP0219489B1 Measuring orifice for a measuring arrangement for measuring fluid flow and measuring arrangement using such a measuring orifice
01/02/1990US4891622 Encapsulated electronic components
01/02/1990US4890499 Fluid flow detectors
01/02/1990US4890489 Direction-sensitive flow-rate indicator
12/1989
12/28/1989WO1989012803A1 Flow sensor
12/28/1989WO1989012802A1 Mass-volume flowmeter
12/27/1989EP0347732A2 Electrical flow sensor
12/27/1989EP0347649A1 Device for measuring the fluid-flow rate of an electrically conductive fluid
12/27/1989EP0162865B1 Counter rotating, multi turbine flow measuring system
12/27/1989CN1038344A Electronic gas flowmeter
12/26/1989US4888991 Relative motion sensor
12/26/1989US4888988 Silicon based mass airflow sensor and its fabrication method
12/26/1989US4888987 High sensitivity measurement device for measuring various parameters of non-electric quantity
12/21/1989DE3918308A1 Flow indicator
12/20/1989EP0347218A2 Air flow metering apparatus for internal combustion engines
12/20/1989EP0347096A2 A speed measurement device
12/20/1989EP0346393A1 Marine instrument
12/20/1989EP0346336A1 Flow measuring device.
12/20/1989CN2049765U Opened type parallel-tube coriolis mass flowmeter
12/20/1989CN2049764U Opened type straight tube coriolis mass flowmeter
12/20/1989CN2049763U Bashel adding up water measurer for water tank
12/20/1989CN1038160A Apparatus for measuring flow of fluid
12/20/1989CN1038159A Vortex flowmeter
12/20/1989CN1038158A 多功能组织细胞测氧器 Multifunction tissue Oximetry
12/20/1989CN1038149A Integrated multifunction regulator station for gas supply to secondary mains
12/19/1989US4888706 Fluid distribution to multiple users through distributed intelligence sub-centers
12/19/1989US4888547 Meter using a microwave bridge detector for measuring fluid mixtures
12/19/1989US4887577 Hot-wire type air flow meter and an internal combustion engine with the same
12/19/1989US4887469 High accuracy turbine flowmeter with optical sensor
12/19/1989US4887462 Air flow rate meter
12/14/1989WO1989012216A1 Apparatus for registering leakage or unintended consumption in a pipe system
12/14/1989WO1989011917A1 Dusting apparatus
12/14/1989DE3820025A1 Measurement circuit
12/14/1989DE3818875A1 Device for determining the mass and/or velocity as well as the number of particles in a fluid
12/14/1989DE3818469A1 Current value indicator with filter for the consumption of heating oil
12/13/1989EP0345524A1 Apparatus for estimating intake air amount
12/13/1989EP0345313A1 Acoustic method for measuring properties of a mobile medium
12/13/1989EP0227685B1 Flow indicating device
12/12/1989US4886420 Protected flow meter rotor bearing
12/12/1989US4885943 Electronic flowmeter system and method
12/12/1989US4885942 Ultrasound flow rate meter using a phase difference method and apparatus
12/12/1989US4885938 Flowmeter fluid composition correction
12/12/1989US4885937 Flow sensor
12/07/1989DE3818643A1 Aerosol generator for producing a continuous flow of particles, in particular for injecting air flows
12/07/1989DE3818417A1 Flow meter having a vortex body
12/07/1989DE3808913C1 Method and circuit arrangement for processing the measuring signals from flow meters
12/06/1989EP0344927A1 Flow meter
12/06/1989EP0344294A1 Vortex generator-sensor
12/05/1989US4884460 Device for sensing air flow
12/05/1989US4884459 Flow rate converter
12/05/1989US4884458 High sensitivity vortex shedding flowmeter
12/05/1989US4884457 Means and method for monitoring the flow of a multi-phase petroleum stream
12/05/1989US4884448 Ultrasonic doppler meter
12/05/1989US4884443 Control and detection circuitry for mass airflow sensors
12/05/1989US4884441 Variable capacity flowmeter
11/1989
11/30/1989WO1989011635A1 Coriolis mass flow meter employing non-metallic flow conduit structure
11/30/1989DE3816680A1 Method of determining properties of gas-borne solid aerosols in high-temperature zones
11/29/1989CN1037586A Signal generator for indicating the condition of water flow
11/29/1989CN1005927B Electromagnetic flow meter converter
11/28/1989US4884215 Airflow sensor and control circuit
11/28/1989US4882935 Convective attenuation flowmeter
11/28/1989US4882934 Ultrasonic instrument to measure the gas velocity and/or the solids loading in a flowing gas stream
11/28/1989US4882931 Method and an apparatus for determining the velocity, direction and other magnitudes of a flow, in particular a gas flow
11/28/1989CA1263257A1 Apparatus for measuring fuel consumption
11/23/1989EP0342763A1 An apparatus for measuring the flow of a fluid
11/23/1989EP0342612A1 Flow rate sensor