Low Temperature Thermocouple Jacks

[fifty60]

I am not having any luck at all finding thermocouple jacks that are rated to -45 C. Any body ever use, or know of, any that are rated to -45 C?

I've checked with OMEGA, and they only go down to -29 C.

 

[fifty60]

Still no luck here. Seems like everything else I find is just rebranded Omega brand. There has to be a T/C jack out there somewhere that is rated to -45 C. Seems like all the focus is on the high end of the temperature scale, and not the extreme low end.

 

[winnie]

Do your connectors need to be connected and disconnected at low temperatures, or simply remain connected at low temperatures? Many plastics become brittle at low temperatures but are fine for _static_ use (think low temperature limits for installing NM cable).

Do you have _cables_ that are suitable for the low temperatures? If your connectors work but your cables fall apart then you still have a problem.

Not a cheap option, but mil spec '38999' connectors (MIL-DTL-38999) are often rated to -65C or lower, and have available thermocouple contacts.

Have you contacted Watlow ( http://www.watlow.com ) to ask if they have suitable connectors; their online documentation only lists the upper temperature limits, but they probably know the low temperature limits. They have ceramic connectors that are probably fine down to cryogenic temperatures.

-Jon