Patents
Patents for G01L 13 - Devices or apparatus for measuring differences of two or more fluid pressure values (2,634)
01/2003
01/02/2003EP1269136A1 Differential-pressure measuring cell
12/2002
12/26/2002US20020194918 Differential pressure sensor
12/19/2002US20020190865 Pressure sensor and door opening/closure monitoring system
12/18/2002CN1096606C Capacitive pressure sensors or pressure differential sensors
12/05/2002WO2002097387A1 High sensitivity pressure sensor with long term stability
11/2002
11/28/2002WO2002095728A1 Portable voice/letter processing apparatus
11/28/2002US20020174706 High sensitivity pressure sensor with long term stability
11/28/2002DE10221931A1 Sensor module for transmitter in industrial fluid processing plant, has rotary coaxial electrical contacts which connect bus adapter and conductors of sensing circuit
11/26/2002US6484586 Differential pressure transducer
11/14/2002WO2002090916A1 Device comprising a wet filter containing a hydrophobic or hydrophobicized nanoporous material
11/14/2002DE10122511A1 Relativdrucksensor mit Feuchtefilter Relative pressure sensor with humidity filter
11/07/2002WO2002088655A1 Capacitive differential pressure sensor
11/06/2002EP1254357A1 Optical pressure sensor
11/06/2002EP1254356A1 Oil-less differential pressure sensor
10/2002
10/31/2002US20020157455 Method and apparatus of nondestructive testing a sealed product for leaks
10/24/2002WO2001059419A9 Optical pressure sensor
10/23/2002EP0776468B1 Differential pressure transmitter
10/10/2002WO2002079742A1 Independent-excitation cross-coupled differential-pressure transducer
10/10/2002DE10117142A1 Capacitive differential pressure sensor incorporates correction of calculated differential pressure for eliminating dependency on network pressure
10/02/2002EP1244898A1 Sapphire pressure sensor beam with gold germanium isolation braze joint
10/02/2002DE10113291A1 Pressure measuring unit comprises a housing with two pressure chambers, and an axially movable rod with a carrier element which is axially compliant but radially stiff
09/2002
09/26/2002US20020134163 Independent-excitation cross-coupled differential-pressure transducer
09/25/2002EP1009986B1 Pressure transducer with error compensation
09/25/2002CN1371494A Regulator diagnostics system and method
09/25/2002CN1371493A Regulator flow measurement apparatus
09/12/2002DE10101180A1 Differenzdrucksensor und Verfahren zur Differenzdruckmessung Differential pressure sensor and method for differential pressure measurement
09/11/2002CN1090823C Semicondctor composition sensor and differential pressure sender
08/2002
08/29/2002WO2000034744A9 Adjustable bandwidth filter for process variable transmitter
08/28/2002CN1089895C Semiconductor differential pressure measuring device
08/27/2002US6441744 Regulator diagnostics system and method
08/22/2002WO2002065083A1 Product leak testing
08/15/2002US20020108447 Differential pressure sensor and method of differential pressure measurement
08/01/2002US20020100333 Sensor with fluid isolation barrier
07/2002
07/31/2002EP0864076B1 Improved fluid pressure measuring system for control valves
07/30/2002US6425291 Relative-pressure sensor having a gas-filled bellows
07/30/2002US6425290 Oil-less differential pressure sensor
07/25/2002WO2001046665A9 Multivariate semiconductor pressure sensor with passageway
07/23/2002US6422085 Flush-diaphragm relative pressure sensor
07/18/2002WO2002055978A1 Differential pressure sensor and method for differential pressure measurement
07/16/2002US6418793 Differential pressure sensor
06/2002
06/05/2002EP1210573A1 Piston type pressure transducer
05/2002
05/30/2002WO2001090704A3 Electrical leakage diagnostics in a magnetic flow meter
05/23/2002DE10141259A1 Drucksensor mit einem Halbleitersensorchip Pressure sensor having a semiconductor sensor chip
05/22/2002CN1350636A Course pressure measuring device with improved error compensation
05/16/2002WO2001090701A3 Conduction indication in a magnetic flowmeter
05/15/2002CN2491939Y Display used for intelligent differential transformer
05/02/2002WO2001090702A3 Spectral diagnostics in a magnetic flow meter
05/02/2002EP1200810A1 Capacitive pressure transducer with improved electrode support
04/2002
04/25/2002WO2002033372A1 Pressure measuring cell
04/25/2002DE10052053A1 Pressure measurement cell has contact pin fed through base body to electrode for capacitance measurement; contact pin, jointing solder and membrane bed form smooth surface
04/24/2002EP1198740A1 Regulator flow measurement apparatus
04/17/2002EP1196834A1 Regulator diagnostics system and method
04/16/2002US6370959 Fuel pressure sensor
04/09/2002CA2217250C Process for joining alumina ceramic bodies
03/2002
03/13/2002CN1080878C Seal diaphragm structure for pressure measuring device
02/2002
02/28/2002US20020023500 Pressure sensor having semiconductor sensor chip
02/27/2002EP1181518A1 Process pressure measurement devices with improved error compensation
02/21/2002US20020020221 Optical pressure sensor
02/14/2002US20020017143 Differential pressure pickup
02/13/2002EP1009985B1 Separating membrane system for a pressure transducer, with a wave crest edge and a pre- and post-cut membrane
02/13/2002CN2476806Y Differential manometer
02/07/2002DE10036836A1 Pressure difference sensor for refilling aircraft fuel tanks uses optical coding to give continuous read out
01/2002
01/31/2002US20020011115 Process sensor module having a single ungrounded input/output conductor
01/30/2002EP1176410A1 Pressure transducer with error compensation
01/24/2002WO2002006785A1 Differential pressure sensor
01/23/2002CN1332367A Method and device for measuring concentration of suspension
01/16/2002EP1172640A1 Differential pressure sensor
01/09/2002CN2470814Y 差压表 Differential pressure gauge
01/02/2002EP1167947A2 Methods and apparatus for measuring suspended-substance concentrations
12/2001
12/27/2001US20010054308 Methods and apparatus for measuring suspended-substance concentrations
11/2001
11/29/2001WO2001090704A2 Electrical leakage diagnostics in a magnetic flow meter
11/29/2001WO2001090702A2 Spectral diagnostics in a magnetic flow meter
11/29/2001WO2001090701A2 Conduction indication in a magnetic flowmeter
11/22/2001US20010042411 Pressure detecting appartus
11/21/2001CN1323390A Bearing with integral transformer
11/21/2001CN1322945A Pressure difference transmitter capable of bearing high monoway overload pressure
11/06/2001US6311560 Separating membrane systems for a pressure transducer, with a wave crest edge and a pre-and post-cut membrane
10/2001
10/31/2001EP1148941A1 Process for detecting, and monitoring changes in properties of fluidized bed solids by measurement of pressure difference fluctuation
10/25/2001US20010032515 Oil-less differential pressure sensor
10/24/2001EP0829004B1 Pressure sealed housing apparatus
10/17/2001EP1144977A1 Method of producing a micro-electromechanical element
10/11/2001WO2001046665A8 Multivariate semiconductor pressure sensor with passageway
10/10/2001EP1143231A2 Pressure detecting apparatus
10/09/2001US6301546 Process for detecting and monitoring changes in properties of fluidized bed solids by pressure difference fluctuation measurement
10/03/2001CN1315654A Balancer for multi-cavity plunger-type differential pressure instrument
10/02/2001US6295875 Process pressure measurement devices with improved error compensation
09/2001
09/20/2001WO2001069194A1 Differential-pressure measuring cell
09/18/2001US6289721 Method for detecting a tanking operation on a receptacle
09/18/2001US6289718 Arrangement for detecting a gaseous component in a gas flow
09/12/2001CN2447764Y Differential pressure mealsuring instrument
09/11/2001US6286372 Pressure differential measuring transducer
09/06/2001DE10006917A1 Diaphragm low-pressure sensor has intermediate layer with low elastic modulus, formed between strain gage structure and diaphragm
08/2001
08/28/2001US6279401 Differential pressure transmitter
08/28/2001CA2144832C Capacitive pressure sensors or capacitive differential pressure sensors
08/22/2001EP1059978A4 Filter bed differential pressure monitoring system
08/16/2001WO2001059419A1 Optical pressure sensor
08/16/2001WO2001059418A1 Oil-less differential pressure sensor
08/14/2001US6272928 Hermetically sealed absolute and differential pressure transducer
08/01/2001EP1119751A1 Bearing with integral transformer
07/2001
07/31/2001US6267159 Method for filling the measuring chamber of a transducer measuring pressure or pressure differential with a pressure transmission liquid and a pressure differential measuring transducer
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