Today I had to figure out how to read temperature from an Omega HH506RA thermocouple signal conditioner/datalogger. The HH506RA is a nice little unit that reads temperature from two thermocouples (type K, J, N, T, R, S, or E). It can display the temperature on its LCD screen and communicate them to a PC over RS232 or USB. The PC connection is optically isolated, which is very nice because RS232 and USB are both notorious for causing noise problems via ground loops.

I’ve put information on how to communicate with the unit up here for future reference.

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