Pressure measuring systems with increased accuracy for a constan

Details Pressure measuring systems with increased accuracy for a constan Pressure measuring systems with increased accuracy for a constan

1981-10-05

1985-08-06

Goldberg, Gerald

Measuring and testing

Fluid pressure gauge

Null balance type

73708, 73718, G01L 912

Patent

active

045328099

ABSTRACT:
A pressure parameter measurement system includes a parameter measurement loop (24, 16, 26, 28, 30, 32, 34) generating a digital signal (N1) indicative of a parameter (Pa-Pb) being measured, a common mode measurement loop (24, 22, 36, 38, 40, 42, Cfa) generating a digital signal (N2) indicative of an element (Pa) of the parameter (Pa-Pb), and a calibration circuit (46) which outputs the parameter (Pa-Pb) as a function of the digital signals (N1, N2) and a temperature signal T.

REFERENCES:
patent: 2869367 (1959-01-01), Moore
patent: 3350945 (1967-11-01), Bristol
patent: 3660745 (1972-05-01), Bertrand
patent: 3790910 (1974-02-01), McCormack
patent: 4086804 (1978-05-01), Ruby
patent: 4322977 (1982-04-01), Sell et al.

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