convert j thermocouple to k

[bicyclerepairman]

Hi all,

I wrote a Labview program to take temperature measurements using a NI921 plugged into a cDAQ9171. It all worked ok and I did a load of testing. When I came to review the data, I realized I'd incorrectly set some of the channels to j type thermocouples, when I'm actually using k type. Is there a way to convert the temperature data I've captured to valid readings? I'm guessing this will require knowing how the system converted the mV input from the thermocouple to degC for j types, reversing this process mathematically to re-gain the raw mV readings, then knowing how the system converts mV to degC for k types, and applying this.

Can anyone help?

Thanks!

Andy.

[ongeelim]

Hi Andy,

Are you referring to NI-9213 or 9211?

Whichever way it is, you can refer to this link:

http://forums.ni.com/t5/LabVIEW/Can-I-convert-j-type-thermocouple-data-to-k-type/td-p/1597286

Hope this helps.

-Ee Lim-

[bicyclerepairman]

Thanks! I did try searching for the answer before posting, but my search-fu must have been weak.