mdavis

Hello, I purchased 8 identical type t thermocouples and connected them to the USB-TEMP. After allowing the device 30 minutes to warm up, I used instacal to configure the device and ran the automatic calibration. Next, I placed the thermocouples close together in a cup of water before recording the output. The results were unexpected. Channels 4-7 provide inconsistent and sine wave like output. See image attached. If I swap the thermocouples between the channels, the results are the same. Channels 4-7 always behave unexpectedly and channels 0-3 look much better. I've repeated this work several times and each time the results were the same. Is there anything I can do to resolve this issue and get an more stable and consistent output?