T7 Internal temperature Sensor from AIN14

2 posts / 0 new

Fri, 06/14/2019 - 07:35

fieryfire

Dear Labjack,

Could you please confirm if the temperature sensor from AIN14 of the labjack T7 uses the 200uA current source. The reason is that, when i connect my own temperature sensor to the 200uA current source. Any discrepancies and odd behaviour i observe in my sensor seems to be replicated on the AIN14 internal temperature sensor as well. This seems very strange as the location of both internal temperature sensor and my own temperature sensor are not in the same environment.

Thanks

Fri, 06/14/2019 - 10:23

LabJack Support

No, the internal temp sensor

No, the internal temp sensor does not use the current source in any way. They are 2 seperate chips. Both are powered by VS, so add another channel that is reading VS at the same time and see if you see anything strange there.

Also, if you just read AIN14 without anything connected to 200UA to you still see your problem?