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

...also have a look at "http://www.mikroninst.com":http://www.mikroninst.com

So, look at contact sensors.. thermocouples... etc.

--
Best regards,
Vladimir

 

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.

rgds
leelock

 

Hi,

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.

Good Luck,

Renukaprasad
Avasarala Automation Ltd.,
[email protected]

 

Type D gets close if I remember correctly. Contact Englehard Alloys.

Mitch