Accession Number : ADD004046

Title :   Method and Apparatus for Remotely Transducing and Transmitting Pressure and Temperature Changes.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Rice ,John H

Report Date : 24 May 1977

Pagination or Media Count : 7

Abstract : A capacitance-type transducer capsule is placed in a remote environment for explosure to its changing physical conditions. An energy pick-up coil in the capsule receives a remotely-generated signal which is converted to DC power for chargeably establishing the capacitance and for driving a tank circuit which includes the capacitance as the only variable. Changes in pressure, temperature, etc. produce linear variations in the capacitance to modulate the oscillations of the tank circuit and produce a transmittable signal frequency containing the sensed information. (Author)

Descriptors :   *Patents, *Remote detectors, *Transducers, Telemeter systems, Variable capacitors, Capacitance, Pressure, Temperature, Direct current

Subject Categories : Test Facilities, Equipment and Methods
      Telemetry

Distribution Statement : APPROVED FOR PUBLIC RELEASE