The TT-100A is a self-contained, battery powered, aircraft turbine temperature test set. It measures system lead resistance and insulation and performs indicator run-outs with a range up to 1000°C. This unit meets the requirements for testing aircraft Chromel/Alumel (CH/AL) turbine temperature measuring systems and accurately displays thermocouple outputs in degrees Celsius. Designed to reduce error and testing time, the unit has an automatic display as well as test leads that incorporate automatic temperature compensation to remove induced voltage caused by a "cold junction" created when the test leads are attached to the aircraft.

• Automatically compensates for ambient temperature at test lead connection junction point or indicates cold junction temperature
• Thermocouple and lead resistance measurements to 0.01 Ohm and insulation measurements up to two megohms
• Large, 9 mm (0.35 in) high character, 3 1/2-digit liquid crystal display with pre-programmed legends
• Range from 0 to 1000° C certified, -60 to 1160° C extended
• Measures and displays values of CH/AL thermocouple in degrees Celsius
• Simulates CH/AL thermocouple with or without simulated system lead resistance
• Simulates thermocouple outputs and system lead resistances from 0 to 25 Ohms
• Accuracy: typical measurement error at ambient (25°C) less than ± 1°C