calibrating thermocouple thermometers
calibrating thermocouple thermometers
Our factory uses many hand held thermocouple thermometers to verify cavity temperatures in molds, in addition to the press platen temp controllers. Our operators find the thermocouples wear out or get damaged regularly and have to be replaced and we are in the process of rewriting our calibration protocol to verify they are working within tolerances. The biggest issue is knowing whether you have a bad thermocouple or digital thermometer. We use a thermometer calibrator to check the thermometers but have not established a good method of verifying thermocouples other than switching a given thermocouple with a new one to see if the same reading is seen. Does anyone one have a proven calibration method or general thermocouple thermometer testing method that that they would be willing to share?