Accession Number : ADD008918

Title :   Fluidic Thermistor/Fugacity Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Negas,Taki ; Dominques,Louis P ; Drzewiecki,Tadeusz M ; Phillippi,Richard M

Report Date : 28 Apr 1981

Pagination or Media Count : 8

Abstract : A device for measuring the fugacity of a material, without requiring a separate device to measure temperature, is disclosed, wherein the device is a solid electrolyte probe, with the probe having a passageway therein, and metallic conductor leads on the outside of the probe and on the inside of the probe in the passageway. The metallic conductor leads are in contact with an E.M.F. measuring circuit, with the reference fluid being passed through the passageway. The passageway also includes a capillary restriction therein, and measuring devices are provided to measure the pressure drop of the reference fluid when flowing through the capillary, thereby permitting determination of temperature. The temperature determination combined with the E.M.F. measurement permit determination of the fugacity of the material. (Author)

Descriptors :   *Patents, *Thermistors, *Fluidic control, Probes, Solid electrolytes, Temperature measuring instruments, Sensitivity, Capillary tubes, Permeability

Subject Categories : Fluidics and Fluerics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE