low temp sensors

[tombc]

We are looking for low temp [-200 C] transmitters to work on 4 to 20 ma or lon

anyone come across this before.

we also need to meet NIST standards.
Tom

[amigo]

Look in here, they have the high side but not the low, but may be they can do something for you.
Just a thought.
http://www.neurologic-research.com/model_1100.htm

Or try this:
http://www.omega.com/ppt/pptsc.asp?ref=CY7&Nav=temt01
you will need to get appropriate converter.



[Edited by amigo on 03-09-2005 at 03:20 PM]

[davem]

I commonly monitor low-temperature medical research freezers using products from Automation Components, Inc. http://workaci.com/

Specifically find the ACI/1K-LT. They'll range the 4-20mA output down to -200C, no problem.

[tombc]

Excellent. I like the lon sensor and we are on our way.

Thanks for your help

Tom