Non-compliant pressure cell

Details Non-compliant pressure cell Non-compliant pressure cell

1985-02-12

1986-09-30

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Null balance type

73705, 73726, G01L 904

Patent

active

046141189

ABSTRACT:
The present invention is a pressure sensing and measurement device that eliminates errors due to compliance and lack of sensitivity. The cell uses a pressure receiving means (such as a flexible diaphragm) to detect an impinging object, a means to counteract the pressure caused by the impinging object (such as internal hydraulic pressure), and a detector to measure the amount of internal pressure used to counteract the impinging force. Since the cell is internally pressurized to a point equal to a value equal to the external pressure, the diaphragm is undeflected and may avoid the problems inherent in simple diaphragm systems (such as bridging and insensitivity).

REFERENCES:
patent: 3350931 (1967-11-01), Johnson et al.
patent: 3686958 (1972-08-01), Porter et al.
patent: 3834239 (1974-09-01), King

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