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I am making a report and how does EGT of an aircraft, either turbo or piston engine, work? Can you please give me the procedures... Like where it starts and being transferred to where and stuff. Thank you!

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    $\begingroup$ Have a look at: aviation.stackexchange.com/questions/233/… in addition to any answers you might get here. $\endgroup$ – Andy Sep 25 '15 at 13:47
  • $\begingroup$ @instcpat Are you asking about piston engines or gas turbine ones? I'm not sure about EGT in piston engines. $\endgroup$ – aeroalias Sep 25 '15 at 15:17
  • $\begingroup$ @aeroalias I mean for both pls :) $\endgroup$ – instcpat Sep 26 '15 at 13:42
  • $\begingroup$ This is now the second time you have edited this question and completely changed the question. I'm also not sure what the current version is asking. $\endgroup$ – fooot Sep 29 '15 at 14:56
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From all the NASA reports I could find they mostly use Thermocouples. They also use RTDs which sometimes are called PT100. I am not sure if termistors are used. There is research on optical measurement, but right now I would say that Thermocouples and RTDs are the common way to measure EGT.

enter image description here
http://ntrs.nasa.gov/archive/
http://www.grc.nasa.gov/WWW/sensors/

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