G - Physics – 01 – L
Patent
G - Physics
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G01L 19/02 (2006.01) E21B 43/12 (2006.01) E21B 47/04 (2006.01) E21B 47/06 (2006.01) G01F 1/34 (2006.01) G01F 1/36 (2006.01) G01L 13/02 (2006.01) G01L 19/00 (2006.01) G01L 19/04 (2006.01) G01L 19/06 (2006.01)
Patent
CA 2484338
A differential pressure sensor for sensing changes in pressure at a desired location, which sensor includes a sensing portion and a reference portion to produce an output indicative of the difference therebetween, both the sensing portion and the reference portion being open to the pressure around the sensor until the sensor is located in the desired sensing location and then the reference portion is closed to capture the pressure then existing at the desired location and any pressure changes thereafter producing signals indicative of the pressure differences.
L'invention concerne un capteur de pression diff~rentielle permettant de d~tecter des changements de pression ~ un emplacement voulu. Ce capteur comprend une partie de d~tection et une partie de r~f~rence pour produire une sortie indiquant la diff~rence entre ces deux parties, ~ la fois la partie de d~tection et la partie de r~f~rence ~tant ouvertes ~ la pression autour du capteur, jusqu'~ ce que le capteur se situe dans un emplacement de d~tection voulu et que la partie de r~f~rence se ferme pour capturer la pression sortant ~ un emplacement voulu, et tout changement de pression subs~quent produisant des signaux indiquant des diff~rences de pression.
Mallison Edgar Robert
Stratton Thomas George
Gowling Lafleur Henderson Llp
Honeywell International Inc.
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