Accession Number : ADD012285

Title :   Dynamic Polymer Pressure Transducer with Temperature Compensation.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Bur,Anthony J ; Roth,Steven C

Report Date : 25 Mar 1986

Pagination or Media Count : 6

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 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.

Descriptors :   *PATENTS, *PRESSURE TRANSDUCERS, *PRESSURE GAGES, POLYVINYLIDENES, FLUOROPOLYMERS, DYNAMIC PRESSURE, TEMPERATURE, COMPENSATION, THERMAL PROPERTIES, THERMOCOUPLES, SIGNALS, AMPLIFIERS, CIRCUITS, ACCURACY

Subject Categories : Plastics
      Test Facilities, Equipment and Methods
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE