Barfield has been manufacturing Turbine Temperature Indicating System Test Sets for more than 40 years, and has amassed a vast knowledge of the common thermocouple EGT systems.

All Turbine Temperature test sets offered by Barfield meet the requirements for testing aircraft Type K (Chromel - Alumel) thermocouple systems and are capable of conducting the following tests:

• System Resistance and Insulation Testing
• Hermocouple Resistance
• Thermocouple Output Simulation for Indicator Accuracy Test

A typical aircraft Exhaust Gas Temperature(EGT) system consists of between 4-16 Type K (Chromel - Alumel) thermocouples, which are mounted parallel to each other. As the temperature increases in the engine exhaust, a voltage is induced in the thermocouple. Since the thermocouples are also electrically connected in parallel, the individual thermocouple voltages are averaged together to get a more precise voltage output and temperature indication. The voltages induced in a thermocouple are very small 40microvolts/degree (40uV/degree) and require very precise test equipment.