Integrated multisensor and static and differential pressure tran

Details Integrated multisensor and static and differential pressure tran Integrated multisensor and static and differential pressure tran

1991-03-19

1993-11-09

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73708, 73727, 338 4, 374143, G01L 906, G01L 1302

Patent

active

052592480

ABSTRACT:
In an integrated multisensor used in a differential and static pressure transmitter, a pair of static pressure gages are formed on a static pressure detecting diaphragm and another pair of static pressure gages are formed at positions on a fixed portion which are near to the center of a differential pressure detecting diaphragm. The second term generated by a differential pressure appearing in a static pressure sensor is a function of a distance. Therefore, equal influence is exerted on each static pressure gage. Accordingly, by constructing a static pressure sensor so as to form a bridge circuit, a static pressure value free of the influence of a differential pressure can be detected, thereby making it possible to determine an accurate differential and static pressure.

REFERENCES:
patent: 4222277 (1980-09-01), Kurtz et al.
patent: 4528855 (1985-07-01), Singh
patent: 4530244 (1985-07-01), Starr
patent: 4986127 (1991-01-01), Shimada et al.
Elektronik 16/Jul. 8, 1987, pp. 74-77.

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