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TM 55-6695-220-13&P
b.
Temperature Selector Switch: Positioning of the TEMPERATURE SELECTOR SWITCH by the operator causes
precision millivoltage outputs to be selected which simulate the aircraft's thermocouple output. Precision resistance
outputs are also selected which simulate the aircraft's resistance thermometer output. The outer circle of graduations
shown on the dial show temperatures in the range from -50 to 1,200 degrees Celsius, corresponding to the standard
thermocouple millivoltages expected for three types of sensor materials. Likewise the inner circle of graduations show
temperatures in the range from -70 to + 300 degrees Celsius, corresponding to standard thermometer resistances
obtained for two different types of resistance elements.
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