Abstract: A thermocouple simulator system which is capable of generating a voltage equivalent to the EMF output of a thermocouple of a selected type at a specified sensing junction temperature. The system includes a keyboard which allows an operator to specify a sensing junction temperature, voltage, thermocouple type, reference junction temperature, and whether a pair of output terminals of the system perform as thermocouple alloy or copper. Using an operation program, a microprocessor calculates the thermocouple EMF using a stored temperature versus EMF polynomial function of the selected thermocouple type. The microprocessor then causes a voltage simulating the calculated EMF to be applied to the output terminals utilizing a reference voltage source, digital-to-analog converter (DAC), and output amplifier.