I am currently running a TC-08 through a USB connection, I have all 8 channels logging but sometimes have only 4 channels connected to type k thermocouples whilst the other 4 are not connected ie open circuit.
I would expect the 4 that are not connected to show a open circuit high value or **** however this does not happen and what is shown is roughly an ambient temperature. Also when i unplug one of the connected thermocouples the temperature shown on this channel also reverts to this previously stated "ambient temperature"
This obviously causes problems in such that if a thermocouple breaks i expect the upscale alarm to trigger and this will obviously not happen if only ambient is displayed on an "open circuit condition".
I have checked all of the settings and cannot see where this problem can be rectified and I have also replaced the TC-08 with another unit but the same problem occurs.
Any help you can give me would be greatly appreciated