09-30-2019 11:38 AM
I have an NI-9210 thermocouple 4 ch DAQ module inserted into a cDAQ-9171 chassis and channel TC1 does not seem to be working. I can insert thermocouples in to TC0, TC2, and TC3 and test in Measurement & Automation Explorer and they all output and respond correctly. I can then move one of the working thermocouples to channel TC1 and I get a temperature output around 2382 that slowly drifts in one direction. I have all settings set identical to other inputs that work fine. For these tests, I set the CJC source to build-in. The output on TC1 seems to be related to this CJC value. When I set the CJC source to constant I get a constant output near 2380. When I change the measurement type to voltage I get a constant voltage output. It's like my TC1 is shorted or otherwise defective.
Is my channel TC1 broken or do I have a setting wrong?
Thanks.
09-30-2019 11:21 PM
This may be a hardware issue.
Are you using the spring terminal version or the Mini-TC version of 9210?
Your TC1 channel connector maybe a little loose or too tight, causing the voltage to drift too high.
You may want to contact your local NI office to get the device RMA'd.
10-01-2019 12:52 PM
It is the NI-9210 version with the Mini-TC connections.
I'll contact an NI rep and try to report back to this post with the resolution.
Thanks