NONHEATING_THERMOCOUPLE_TESTER

Published:2009/7/21 22:23:00 Author:Jessie | From:SeekIC

Potentiometer completes bridge circuit of simple lest set that checks thermocouple installations for thermal contact, electrical continuity, and correct polarity, without causing temperature change at thermocouple junction. Operation depends on resistance difference between thermocouple wires, which ranges from 6.5 ohms per 100 feet of 28-gage copper wire to 266 ohms for Chromel-P.-S. Meieran, Tester Chicks Out Thermocouple Circuits, Electronics, 36:11, p 102-106.



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