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Dynamic Polymer Pressure Transducer with Temperature Compensation.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
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 uncorrected pressure readings and the dynamic thermal signal and producing on output signal representing accurate pressure data which is corrected for changing thermal conditions. Also disclosed are the details of making an active PVDF transducer.
APPROVED FOR PUBLIC RELEASE