Accession Number : AD0256895

Title :   PYROELECTRIC TRANSDUCERS FOR HEAT-TRANSFER MEASUREMENTS

Corporate Author : LOCKHEED MISSILES AND SPACE CO SUNNYVALE CALIF

Personal Author(s) : PERLS,T.A. ; HARTOG,J.J.

Report Date : MAY 1961

Pagination or Media Count : 1

Abstract : The state of the art for heat-transfer measurements is briefly reviewed. It is shown that heat-transfer rate may be measured with extremely short response times by the use of a variety of temperature-sensing devices followed by a simple electrical differentiator. Theoretical considerations are presented for pyroelectric ceramic transducers, and it is shown that these sensors constitute a particularly simple type of temperature-measuring device with differentiation. Evaluation and calibration procedures, applications, advantages, limitations, as well as typical circuitry and installations are discussed. (Author)

Descriptors :   *HEAT TRANSFER, *TEMPERATURE SENSITIVE ELEMENTS, *TRANSDUCERS, CERAMIC MATERIALS, LEAD COMPOUNDS, MEASUREMENT, PIEZOELECTRIC CRYSTALS, PIEZOELECTRIC GAGES, PIEZOELECTRIC TRANSDUCERS, POLARIZATION, TEMPERATURE, TITANATES, WAVEGUIDE IRISES, ZIRCONATES

Distribution Statement : APPROVED FOR PUBLIC RELEASE