Field Pocket Guide

Thermocouple Tables

Eight letter types, ITS-90, reference junction at 0 °C. Convert temperature to millivolts and back with cold-junction compensation, or generate a reference table at any interval. Built straight from the NIST reference functions.

Thermocouple type

Convert

Hot junction (°C)

Cold junction / reference (°C)

Meter reads

—mV

E(hot), ref 0 °C

—mV

E(cold junction)

—mV

Reference table · absolute, ref 0 °C

From (°C)

To (°C)

Step (°C)

°C	mV	°C	mV

Cold-junction compensation. The tables are absolute, referenced to 0 °C. A real meter sees only the difference between the hot junction and its own terminals, so the millivolts at the meter equal E(hot) − E(cold junction). Set the reference to your terminal block temperature and the converter does it for you.