A python script for converting thermocouple voltage to temperature units and vice versa.

• Supports thermocouples of types B, E, J, K, N, R, S, T
• All voltage is measured in millivolts (mV)
• All temperature measurements are in degrees Celcius

Conversion formulae used are taken from NIST thermocouple tables and coefficients. You can view this data in the file reference/allcoeff.tab

No warranty given or implied whatsoever with this tool. Use at your own risk.

Usage

Perform tc.py -h for full list of options.

Examples

Convert 1.2mV type K to temperature

./py.tc --mode mv2k 1.2

Convert -0.1mV type J to temperature

./py.tc --mode mv2j -0.1

Convert 0.1, 0.2, 0.3 mV type K to temperature

./py.tc --mode mv2k 0.1 0.2 0.3

Convert 100 degrees C to Type K voltage

./py.tc --mode k2mv 100

Meter modes

Convert 0.1, 0.2, 0.3 mV type K to temperature, and show uncertainty when measurements are made from a Agilent U1272A DMM

./py.tc --meter u1272a --mode mv2k 0.1 0.2 0.3

Convert temperatures 0, 50, 100 to type N millivolts

./py.tc --mode n2mv 0 50 100

Offsets

If you use the --offset-output N option, you can add an offset-output to the result. Use the --offset-input N option to add an offset to the input. Both of these options can be used together.

Convert 0.1 mV type K to temperature, and add 25 degrees to result.

./py.tc --offset-output 25 --mode mv2k 0.1

If no mode is given, mv2k is assumed. The above is the same as:

./py.tc --offset-output 25 0.1