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36 inch Thermocouple provides 30 mV output
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The Q390A thermocouples sense the pilot flame on standing pilot gas-fired heating systems. The pilot flame heats the tip of the thermocouple, producing a temperature differential between it and the base to generate 30 millivolts.
Sales/Promotional Materials-Sell Sheet for Q340A and Q390A Thermocouples (English)
Product Data and Specifications-Product Data for Q309, Q313, Q335, Q340, Q390 Thermocouples and Thermopile Generators (English)
Product Data and Specifications-Product data for Q390 Q390 Thermocouples (English) - Legacy Product Document