I want to measure temperature inside RF Heater. The maximum temperature to be measured is 2200 degrees with accuracy of 1 degree (if possible). Can anybody suggest appropriate sensor
Check this manufacturer out:
"http://www.ircon.com":http://www.ircon.com . They may have something. I have used their IR sensors in ovens measuring web temperatures.
It is very hard requirements... for non-contact means it is rather impossible...
"two colors" pirometer MR1S "Marathon" looks like _good_ one... but the uncertainity is 0,75%(+-30 degrees C for 3000 degrees diapason)...
"recurrence"(instability) - 0.3% (~10 degrees).. resolution
of 1 degree - "http://www.raytek.com":http://www.raytek.com
if i recall right there is no metal that will be stable and reproducible at 2200degC. it is probably time to switch to other methods such
as the infrared.
We had a similar issue and have were successful in using a sheathed T/c and using an instrument with high CMRR and noise filtering, as there would be high RF noise.
However, guaranteeing the accuracy of 1 degree is questionable.
Problem with IRs is the emissitvity settings which vary with temp.