Internally switched multiple range transducer

Details Internally switched multiple range transducer Internally switched multiple range transducer

2011-08-16

2011-08-16

Allen, Andre J (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S736000

Reexamination Certificate

active

07997143

ABSTRACT:
There is disclosed an internally switched multiple range transducer. The transducer employs a plurality of individual pressure sensors or Wheatstone bridges fabricated from semiconductor materials and utilizing piezoresistors. Each sensor is designed to accommodate accurately a given pressure range, therefore, each sensor is selected to provide an output when an applied pressure is within its accommodated range. As soon as the pressure exceeds the range, then another sensor is employed to produce an output. Each of the sensors, or each separate transducer, is coupled to a switch or other device to enable the selection of one of the plurality of sensors to operate within its given pressure range when the applied pressure is in that range. In this manner one obtains pressure measurements with a high degree of accuracy across a relatively large pressure range.

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patent: 2006113759 (2006-10-01), None
International Search Report and Written Opinion dated Sep. 20, 2010 for related PCT Application No. PCT/US2010/030547.

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