Patents
Patents for G01L 13 - Devices or apparatus for measuring differences of two or more fluid pressure values (2,634)
03/1989
03/28/1989US4817022 Method and apparatus for automatic offset compensation in parameter-sensing transducer systems
01/1989
01/17/1989US4798089 Isolator apparatus
12/1988
12/27/1988US4793187 Circuit arrangement for the compensation of temperature-dependent and temperature-independent drift and for the compensation of the sensitivity of a capacitive sensor
12/21/1988CN88202728U Corrosion resistant differential pressure sensor
12/07/1988CN88200206U High-pressure air water column differential pressure gage
12/06/1988US4788867 Differential pressure detector
11/1988
11/23/1988EP0292333A2 Pressure transducer assembly
11/23/1988CN88203578U Throttle differential measuring device with power accumulator
11/17/1988EP0291393A1 Structure of a capacitive cell for measuring differential pressures
11/08/1988US4783256 Adapter assembly for filter arrangement
11/08/1988US4782703 Temperature compensated pressure signal generator
10/1988
10/19/1988CN87216349U Solid-state piezoresistance type differential pressure transducer
10/18/1988US4778159 Adjustable range spring for differential pressure responsive devices
10/11/1988US4776218 Amorphous metal elastic diaphragm divider between fluids
10/04/1988US4776019 Diaphragm for use in condenser microphone type detector
09/1988
09/27/1988US4773269 Media isolated differential pressure sensors
09/22/1988WO1988007185A1 Isolator apparatus
09/21/1988CN88101231A Isolator apparatus
08/1988
08/30/1988US4766769 Differential-pressure measuring apparatus with improved arrangement for coupling pressures to a semiconductor sensor
08/02/1988CA1239806A1 Capacitive sensing cell made of brittle material
07/1988
07/20/1988CN86108892A Split-seconds type silicon varistor pulsating flow rhysimeter probe
07/06/1988EP0273832A2 Differential pressure detector
07/06/1988CN87106322A Flangeless transmitter coupling to flange adapter union
06/1988
06/28/1988US4754365 Differential pressure transducer
05/1988
05/24/1988US4745876 Differential pressure responsive indicating device
05/24/1988US4745810 Flangeless transmitter coupling to a flange adapter union
05/03/1988US4741214 Capacitive transducer with static compensation
04/1988
04/14/1988DE3633810A1 Pressure-difference measuring device
04/05/1988US4735098 Dual diaphragm differential pressure transducer
03/1988
03/30/1988EP0177491A4 Pressure compensated differential pressure sensor and method.
03/29/1988US4733563 Fluid pressure transmitter for use in potentially explosive atmospheres
03/24/1988WO1988002107A1 Flangeless transmitter coupling to a flange adapter union
03/08/1988US4729339 For use in a fluid system
02/1988
02/24/1988CN87104418A Differential-pressure sensor
02/16/1988CA1232773A1 Adhesive joint for diaphragm to sensor connection in pressure transducers
02/11/1988WO1988001049A1 Media isolated differential pressure sensors
02/10/1988EP0255768A2 Adapter assembly for filter arrangement
02/03/1988EP0254843A2 Method and apparatus for automatic offset compensation in parameter-sensing transducer systems
02/02/1988US4722228 Remote seal-type pressure signal generator
01/1988
01/27/1988EP0094429B1 Apparatus for conveying fluid pressures to a differential pressure transducer
01/14/1988WO1988000335A1 Differential pressure sensor
01/12/1988US4718279 Dual bourdon tube type sensing pressure transducer
12/1987
12/23/1987EP0250028A2 Circuit device for compensation of temperature dependent and temperature independent drifts of a capacitive sensor
12/22/1987US4713969 Differential pressure transmission apparatus
12/22/1987CA1230496A1 Differential pressure sensor
12/08/1987US4711127 Method and apparatus for measuring the pressure of a fluid
11/1987
11/19/1987EP0245472A1 Dual diaphragm differential pressure transducer
11/03/1987CA1228924A1 Method of digital process variable transmitter calibration and a process variable transmitter system utilizing the same
09/1987
09/22/1987US4695817 Environmentally protected pressure transducers employing two electrically interconnected transducer arrays
09/15/1987US4693121 Differential-pressure measuring apparatus with improved overpressure protection
09/02/1987EP0110920B1 Device for the control of a fluid pressure of a turbomachine engine
08/1987
08/11/1987CA1225255A1 Pressure transducer
08/05/1987EP0231074A2 Lubrication pressure sensor apparatus
07/1987
07/21/1987US4680971 Dual diaphragm differential pressure transducer
07/14/1987US4679466 Line pressure control device for hydraulic control system of automatic transmission
07/14/1987CA1224056A1 Transducer
06/1987
06/30/1987CA1223463A1 Cylindrical force transducer beam
06/30/1987CA1223453A1 Pressure sensor with a substantially flat overpressure stop for the measuring diaphragm
06/10/1987EP0225216A1 Differential manometers for small gas pressures
06/02/1987US4670733 Differential pressure transducer
05/1987
05/21/1987WO1987003088A1 Dual diaphragm differential pressure transducer
05/20/1987EP0110992B1 A liquid to liquid differential capacitive pressure transducer and method for manufacturing same
05/19/1987US4665753 Inductive differential pressure sensor
05/13/1987EP0221661A2 Pressure indicating device
04/1987
04/08/1987EP0217509A2 Self-zeroing transducer assemblies
04/07/1987US4655074 Self-zeroing pressure transmitter with automatic pressure manifold
03/1987
03/31/1987US4653330 Pressure transmitter housing
03/24/1987US4651670 Pressure indicating device
03/24/1987US4651570 Differential pressure monitor
03/03/1987US4646624 Differential pressure sensor
02/1987
02/25/1987EP0211519A2 Capacitive differential pressure transducer
02/10/1987CA1217647A Fluid pressure transmitter assembly
02/03/1987US4640135 Sensor
02/03/1987CA1217523A1 Automatic pressure sensitive regulation assembly
01/1987
01/31/1987CN85101132A Pressure sensor with a substantially flat overpresswre stop for the measuring diaphragm
01/28/1987EP0210015A2 Pressure transmitter and housing therefor
01/21/1987EP0209495A2 A fluid pressure transmitter for use in potentially explosive atmospheres
01/20/1987US4637257 Pressure difference measuring device with a semiconductor pressure sensor
01/10/1987CN85101369A Semiconductor differentical pressure signal generator
01/06/1987CA1216360A1 Pressure compensated differential pressure sensor and method
01/02/1987DE3522383A1 Compact differential pressure sensor
12/1986
12/16/1986US4628740 Pressure sensor
12/09/1986US4627292 AC transducers, methods and systems
12/09/1986US4627286 Pressure or pressure difference measuring instrument
12/03/1986EP0203364A2 Fluid-bearing of a piston of a pressure-measuring device
11/1986
11/26/1986CN86200908U Pore pressure sensor
10/1986
10/22/1986EP0198018A1 Capacitive sensing cell made of brittle material
08/1986
08/12/1986US4604900 Adhesive joint for diaphragm to sensor connection in pressure transducers
07/1986
07/29/1986US4603371 Capacitive sensing cell made of brittle material
06/1986
06/17/1986US4595342 Device for the control of a fluid pressure of a turbomachine engine and support for a pressure pick-off
06/10/1986CA1205647A1 Pressure transducer
06/04/1986EP0183640A1 Device for measuring pressure differences using a semiconductor pressure sensor
05/1986
05/21/1986EP0181757A2 Diaphragm pressure transducers
05/06/1986US4586384 Pressure or pressure difference measuring instrument
04/1986
04/24/1986WO1986002447A1 Capacitive sensing cell made of brittle material
04/23/1986EP0178368A2 Process variable transmitter and method for correcting its output signal
04/16/1986EP0177491A1 Pressure compensated differential pressure sensor and method.
04/16/1986CN85202425U Pressure-relief indicator for liquefied gas
02/1986
02/25/1986US4572000 Pressure sensor with a substantially flat overpressure stop for the measuring diaphragm
01/1986
01/21/1986US4565096 Pressure transducer
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