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58th Edition, August 1, 1958

Complete Document

Thermoelectric Circuits and the Performance of Several Aircraft Engine Thermocouples

Includes all amendments and changes through Reaffirmation Notice , May 2018

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Product Details:

  • Revision: 58th Edition, August 1, 1958
  • Published Date: May 2018
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 34
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

The NET EMF of a thermoolectric circuit can be thought of as originating entiroly in the regions of temperature gradient. Any extraneous materials, such as switoh or connector terminals, in a temperature gradient nay cause an error in the temperature measurement.

In addition to circuitry errors, jet engine thermocouple indications require correction for the effects of conduction, radiation, response rate, and gas velocity. The magnitudes of the corrections depend on the thermocouple design and the environmental conditions. Performance curves for several typical Jet engine thermocouples arc presented,with the methods of making the various corrections.
AIA/NAS Aerospace Standards