2 replies to this topic

[rajpal]

Dear all ,



Could you please help me to solve following problem.

I want to measure Temperature in induction furnace , currently i am using R type of thermocouple for range upto 1450 degree C, which is inserted directly from top of furnace . In our process we heat furnace upto 1450 degree C and remove the thermocouple and pour the martial outside during the pouring if we not remove thermocouple then its break /damage most of the time and also if we remove thermocouple at 1450 degree C directly outside the furnace then its also damage due to the thermal shock .

So for avoiding these problems with T/C i want to go with non contact type of temperature sensors , but our furnace having large amount of fluoride fumes at 1200 degree C . so can anybody suggest me which type of non contact type sensor is suitable for this process .

With Regards

[ankur2061]

Rajpal,

Have you thought of using an optical pyrometer as a non-contact type sensor. These are considered to be quite reliable for high temperature applications.

Refer the link below for an introduction to pyrometers.

http://en.wikipedia.org/wiki/Pyrometer

Regards,
Ankur.

[breizh]

Infrared pyrometers are suitable .
http://www.wintron.c.../irproducts.htm

I was using one of them to follow the degradation of insulation material in lime kiln .

Hope this helps
Breizh