Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1984-09-06
1986-03-25
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73754, 73DIG4, 374143, 374179, G01L 908, G01K 710
Patent
active
045775109
ABSTRACT:
Accurate dynamic pressure data in a changing thermal environment is obtained through the use of a pressure gage formed from polyvinylidene fluoride (PVDF) polymer material. The temperature compensation pressure gage has three major elements: an active PVDF transducer which obtains remote pressure readings which are uncorrected for thermal effects; a thermocouple having a short rise time allowing an output thermal signal which dynamically responds to changing thermal conditions; and a compensation amplifier circuit receiving the uncorrected pressure readings and the dynamic thermal signal and producing an output signal representing accurate pressure data which is corrected for changing thermal conditions. Also disclosed are the details of making an active PVDF transducer.
REFERENCES:
patent: 3060748 (1962-10-01), Schwartz
patent: 3894424 (1975-07-01), Edelman et al.
patent: 3940974 (1976-03-01), Taylor
patent: 3970862 (1976-07-01), Edelman et al.
patent: 3971250 (1976-07-01), Taylor
patent: 4366714 (1983-01-01), Adorni
Bur Anthony J.
Roth Steven C.
Auton William G.
Singer Donald J.
The United States of America as represented by the Secretary of
Woodiel Donald O.
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