This might be a pretty basic question, but I was wondering if I have the wiring correct on my temp probe. I seem to be having grounding issues where the temp will read correctly for a few days then all of a sudden go berserk and read orders of magnitude off. (for example, should read 65, but reads 250). On the Brewers Hardware website, the instruction for the BCS temp probes reads:
"Since these are thermistor-based temperature sensors, there is no polarity to the sensor itself. The black and orange wires are used, the red and brown wires are unconnected. The unshielded drain wire is in contact with the temperature probe end but is not electrically tied to ground."
On the sensor that I received from him there are black, red, white, and an unshielded wire. Not the colors indicated in the instructions. I was wondering which color I connect to Temp In and which I connect to Ground. Currently I have the black connected to Temp In and White to ground. It seems to work, but I was still having issues. Do I use the unshielded wire as ground? I test wired it that way and the temp reading was off which means I just might need to recalibrate.