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Engine Thermocouple

Old 23rd Jul 2020, 03:56
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Engine Thermocouple

Thermocouple in engine works by hot and cold junction
the hot junction will be located at the engine
where will the cold junction be in large aircraft ?
I am sure cold junction will not located at the cockpit but then how cold junction get indication ?
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Old 25th Jul 2020, 18:41
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I believe it the end connected to the junction box near the turbine section (engine area), Place might be different depending on the engine. From there it transferred to EEC/FADEC where true temperature adjustment its calculated (internally)

Bare in mind that the thermocouples produce MilliVolts of energy.

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