How to use K thermocouple instead E- type without compensation cable?

Any thermocouple measuement requires 2 temperature measurements

  1. hot junction measurement
  2. cold junction measurement

A cold junction is created at the point where non-compensation wire is connected to the thermocouple wire.

A measurement without compensation wire AND without a corresponding cold junction measurement is not valid.

The only way to take a K type thermocouple measurement (or any type thermocouple measurement) without compensating cable is to use a temperature transmitter configured for the type of thermocouple because the transmitter will perform the cold junction measurement at its wiring terminals.

credits: Carl Ellis