Anyone found a good TypeK thermocouple for measuring EGT?
From what I can tell, electrically, all Type K thermocouples are compatible. But mechanically, they come in many configurations for specific applications.
Note many Fluke DMMs have type K thermocouple inputs as well. It should make a good reference for calibration.
Thermocouples work on the Seebeck effect of temperature differentials across junctions of dissimilar metals. It should be accurate as long as it is intact.
One thing about thermocouples...only use type K thermocouple wire to extend type K sensors, otherwise, you will make unwanted thermocouples. Chromel wire to chromel wire, alumel to alumel wire. All the way to the terminals at the gauge, where the gauge knows the temperature at the gauge. Not doing this will likely result in incorrect readings, which will not be appreciated. If you don't know about this, do a little research until you see how the magic trick works. Few things are worse than trusting a lie.
"It ain't what we don't know that gets us into trouble so, it's what we think we know for sure that just ain't so!" - Mark Twain