ReclaimerLabs_Thermocouple (community library)


Name Value
Name ReclaimerLabs_Thermocouple
Version 0.9.7
Installs 718
License MIT
Author Jason Cerundolo
Maintainer Jason Cerundolo
Repository ReclaimerLabs/ReclaimerLabs_Thermocouple
Download .tar.gz
All Versions 0.9.7, 0.9.5, 0.9.4, 0.9.3, 0.9.2

Calculate thermocouple hot junction temperatures with cold junction compensation.

Library Read Me

This content is provided by the library maintainer and has not been validated or approved.


This library provides a function that takes in a differential thermocouple voltage, thermocouple type, and cold junction temperature to calculate a hot junction temperature. It uses a lookup table generated from the NIST standards. The calculation method is done as described in section 3 of App Note SBAA189 from TI.

Check out the other github repos for more information on a library to talk to the ADS1118 ADC and a board that connects it to a Particle Photon.

Example Usage

The function is implemented a static method, so you do not need to create a ReclaimerLabs_Thermocouple object. You can simply call ReclaimerLabs_Thermocouple::calc_temp().

For example, TYPE_K is the thermocouple type. diff_volt_mV is the differential voltage in millivolts. cold_junc_C is a float holding the cold junction temperature in degrees Celsius. If return_val is 0, then hot_junc_C will hold the hot junction temperature in degrees Celsius.

float hot_junc_C;
int32_t return_val;
return_val = ReclaimerLabs_Thermocouple::calc_temp(TYPE_K, diff_volt_mV, cold_junc_C, &hot_junc_C);

Questions and Comments

If you have questions or comments, you can email me directly at

Browse Library Files