In industrial situations, thermocouple calibration and standardisation are two different stages of metrology operations: Routine calibration has already finished the comparison with standards and input error correction values, fully meeting the accuracy compensation criteria in industrial hot runner circumstances. There is no need for a separate recalibration operation following calibration.
Special Scenarios Triggering Recalibration:
When a thermocouple's sensing element is replaced or its electrodes are re-welded, the original calibration properties change, necessitating a full recalibration process to establish a new error benchmark.
Following hardware repair of the Husky temperature controller's main control board and signal collection module, the system signal acquisition benchmark alters, necessitating thermocouple channel calibration.
If three consecutive calibrations show a significantly accelerated thermocouple thermoelectric potential drift rate, and the original compensation curve can no longer meet the accuracy requirements across the entire temperature range, a new linear compensation curve must be generated through calibration.
Routine Maintenance Recommendations: In daily production, as long as thermocouple calibration is completed according to the prescribed cycle and periodic accuracy comparison and verification are performed, the temperature measurement accuracy can be guarantyd to remain consistent over time. There is no need to schedule duplicate recalibration operations, as this completely meets the process accuracy and metrological compliance requirements of hot runner injection moulding.
