Joelbarb0

hello, I am using 8 channels of the USB -TC with T TYPE thermal couple wire and I was wondering if the USB-TC has a voltage limit. I ask because i am connecting the thermal couple wire to a bus bar with 2000 amps and 5 volts on it and the temperature readings are bouncing all over. would it be possible to ground the DAQs in some way of am I out of luck?