I have recently started to use an 1800 deg C kiln. It is equipped with a thermocouple specified as a PR2040. Anyone know the mV vs. temperature characteristic of this type of thermocouple?
TIA
exotic thermocouple
Jul 04, 2005
5 Replies
Pt's one of the platinum-rhodium thermocouples. Type B?
Jerry
Probably not. Google for PR 20-40. Pt-20% Ro vs. Pt-40% Ro?
Jerry
Type B is Pt 6% Rh/ Pt 30% Rh. R and S have a pure Pt leg.
This is a more exotic type, without an ISA designation AFAIK.
I have a very old document (in German only) that shows the output of this type at 1800°C as only about 4.5mV, and somewhat like B, rather flat at the low end.
Best regards, Spehro Pefhany
It's a standard, but not lettered pair. A line from
formatting link
Multiple inputs?thermocouple (K, J, T, B, S, R, N, E, L, U, W, Platinel 2, PR20-40, W97Re3-W75Re25), ...
Jerry
Yes, and it seems to be mostly or entirely supported by Japanese instruments.
Anyone have a pointer to modern tables or equations for this type?
Best regards, Spehro Pefhany
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required