Patents
Patents for G01L 13 - Devices or apparatus for measuring differences of two or more fluid pressure values (2,634)
01/1997
01/21/1997US5596148 Pressure difference measurement transducer with electric lead-through in bore parallel to housing longitudinal axis
01/21/1997US5596147 Coplanar pressure sensor mounting for remote sensor
01/15/1997EP0753728A2 Semiconductor differential pressure measuring device
12/1996
12/31/1996US5589643 Across the wall pressure differential indicator
12/27/1996EP0749721A1 In vivo rezero apparatus for a pressure transducer
12/20/1996CA2176429A1 In vivo rezero apparatus for a pressure transducer
12/19/1996WO1996041141A1 Magnetic relative position transducer
12/10/1996US5583296 Layered diaphragm pressure sensor with connecting channel
12/10/1996US5583294 Differential pressure transmitter having an integral flame arresting body and overrange diaphragm
12/04/1996EP0745834A2 Semiconductor pressure sensor
12/04/1996CN1033469C Multi-function differential pressure sensor
11/1996
11/28/1996WO1996037764A1 Pressure sealed housing apparatus and methods
11/26/1996US5578760 Seal diaphragm structure for pressure measuring device
11/06/1996CN1135039A Semiconductor composition sensor
10/1996
10/30/1996EP0577720B1 Pressure sensor with high modulus support
10/30/1996CN2239026Y Multifunction detecting instrument for door and window
10/29/1996US5569856 Differential pressure transducer wherein a bridge connects two pressure diaphragms
09/1996
09/18/1996CN2235617Y Steam thermal insulation five valve group
09/18/1996CN1131462A Pressure transmitter isolation diaphragm
09/10/1996US5554809 Process detection apparatus
09/06/1996WO1996027123A1 Pressure sensors and pressure transmitters
09/06/1996CA2212384A1 Pressure sensors and pressure transmitters
09/04/1996EP0672239A4 Pedestal mount capacitive pressure sensor.
08/1996
08/21/1996EP0727650A2 Surface-micromachined symmetrical differential pressure sensor
08/14/1996DE19510447A1 Differential pressure sensor with dual pressure chambers
08/01/1996DE19602442A1 Compound sensor using series connected piezo-resistive semiconductor measuring elements
07/1996
07/31/1996EP0681691B1 Pressure sensor
07/24/1996EP0723143A1 Arrangement for measuring pressure or differential pressure
07/24/1996CN1127355A Seal diaphragm structure for pressure measuring device
07/24/1996CN1127354A Capacitive pressure sensors or capacitive differential pressure sensors
07/24/1996CA2167885A1 Differential pressure indicators
07/17/1996CN2231414Y Transmitter for measuring liquid pressure, difference pressure and liquid level
07/10/1996EP0720733A1 Pressure transmitter isolation diaphragm
07/10/1996CN2230923Y Gas pressure difference meter
07/02/1996US5531120 Compact differential pressure transmitter having first and second damper chambers
07/02/1996CA2054668C Micromachined differential pressure transducers and method of producing the same
06/1996
06/27/1996WO1996019371A1 Method and device for eliminating sudden pressure changes in vehicles
06/27/1996DE19548108A1 Vorrichtung und Verfahren, um plötzliche Druckänderungen in Fahrzeugen, insbesondere Bodenfahrzeugen, zu vermeiden In order to avoid device and method sudden pressure changes in vehicles, in particular floor vehicles,
06/26/1996EP0717836A1 Media-isolated differential pressure sensor
06/25/1996US5528940 Process condition detecting apparatus and semiconductor sensor condition detecting circuit
06/18/1996US5526692 Sensor
06/11/1996US5524492 For providing an output indicative of a pressure of a process fluid
05/1996
05/30/1996DE4442326A1 Verfahren und Vorrichtung zur Ermittlung einer Druckgröße Method and apparatus for determining a pressure variable
05/14/1996US5515732 Capacitive pressure sensor and reference with stress isolating pedestal
04/1996
04/11/1996WO1996006338A3 Differential pressure transmitter
03/1996
03/27/1996CN1119469A Pressure difference measurement converter
02/1996
02/29/1996WO1996006338A2 Differential pressure transmitter
02/28/1996EP0698780A1 Differential capacitance detector
02/27/1996US5494072 Value device assembly as a connection unit for differential pressure transducers
02/21/1996EP0697103A1 Valve battery useful as connecting module for differential pressure measurement transducers
02/14/1996CN1116767A Pressure differential switch and/or pressure differential indicator in which servo piston is controlled by offsetting spring
01/1996
01/31/1996EP0560875B1 Pressure transmitter with stress isolation depression
01/18/1996WO1996001414A1 Media-isolated differential pressure sensor
01/10/1996EP0593676A4 Method and apparatus for measurement of forces and pressures using tensioned bellows
01/10/1996EP0439494B1 Differential pressure sensor with membrane having a free edge construction
01/03/1996EP0689668A1 Pressure difference measurement converter
12/1995
12/26/1995US5477738 Multi-function differential pressure sensor with thin stationary base
12/09/1995CA2143787A1 Differential pressure indicator
12/05/1995US5471884 Gain-adjusting circuitry for combining two sensors to form a media isolated differential pressure sensor
11/1995
11/15/1995EP0682239A2 Differential pressure detecting apparatus
11/15/1995EP0681691A1 Pressure sensor.
10/1995
10/17/1995US5457999 Method and apparatus for measurement of forces and pressures using tensioned bellows
10/11/1995EP0676785A2 Differential pressure switch
10/07/1995CA2146378A1 Differential pressure switch with an adjusting piston drive n by a restoring spring for an oil-separating air filter
09/1995
09/27/1995EP0674164A1 Capacitive pressure sensor or differential pressure sensor
09/27/1995EP0312532B1 Differential pressure sensors for sensing pressure and method of manufacture
09/21/1995DE19510688A1 Sealing diaphragm structure used in pressure measuring device
09/20/1995EP0672239A1 Pedestal mount capacitive pressure sensor
09/14/1995WO1995024625A1 Valve battery useful as connecting module for differential pressure measurement transducers
09/14/1995DE4407609A1 Ventilbatterie als Anschlußbaugruppe für Differenzdruckmeßumformer Valve battery as a terminal assembly for Differential Pressure
08/1995
08/08/1995US5438875 Removing sacrificial material through temporary channels as a method of making an overpressure-protected differential pressure sensor
07/1995
07/26/1995CN1105756A Pressure sensor capable of automatically compensating static pressure
07/12/1995CN2203450Y Device for measuring pressure microchange under high static pressure
06/1995
06/14/1995CN2200816Y Air miniature differential pressure gauge
06/07/1995CN1028798C Modular pressure instrument
05/1995
05/30/1995US5419182 Pressure difference detector, a method for judging an abnormality of the detector, and a fuel vapor emission preventing employing the detector
05/17/1995EP0653615A2 Valve block assembly for measuring pressures and differential pressures in liquid or gas transporting pipes
05/09/1995US5412992 Differential pressure sensor capable of removing influence of static pressure and a method of assembling the same
04/1995
04/26/1995EP0650041A2 Hall effect sensor pressure transducer
04/19/1995EP0649010A2 Method for measuring pressure differences and device for converting displacements
04/19/1995EP0649009A2 Differential pressure transducer
04/06/1995DE4338558C1 Device for measuring differential pressure
03/1995
03/30/1995WO1995008759A1 Pressure transmitter isolation diaphragm
03/30/1995DE4332470A1 Manometer for measuring the difference between a first and a second pressure
03/30/1995CA2169824A1 Pressure transmitter isolation diaphragm
03/23/1995DE4331720A1 Piston differential pressure meter for monitoring filter installations
03/15/1995EP0642658A1 Pressure transducer
03/15/1995CN1100198A Semiconductor type differential pressure measurement apparatus and method for manufacturing the same
02/1995
02/22/1995EP0639761A1 Capacitive differential pressure transducer
02/21/1995US5391111 Method and apparatus for eliminating sudden changes of pressure inside vehicles, in particular ground vehicles
02/07/1995US5386729 Temperature compensated microbend fiber optic differential pressure transducer
02/07/1995CA2006162C Differential capacitive pressure sensor with over-pressure protection
02/01/1995EP0636243A1 Modular transmitter with flame arresting header.
11/1994
11/02/1994EP0622287A1 Device for pressure limitation in high speed railway vehicles
10/1994
10/25/1994US5357808 Overpressure-protected, differential pressure sensor
10/25/1994US5357807 Micromachined differential pressure transducers
09/1994
09/29/1994WO1994021992A1 Pressure difference measurement converter
09/20/1994US5349491 Pre-stressed pressure transducer and method of forming same
09/06/1994US5344523 Diaphragm over cavity in single crystal silicon wafer
08/1994
08/16/1994USRE34694 Automatic transducer selection system for pressure measurement
1 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27