Basic Parameter Verification: Use the Husky thermostat's calibration parameter interface to ensure that the previously configured cold junction compensation value, temperature offset parameters, and multi-point compensation curve were correctly recorded, with no parameter loss or jumps.
Check that the thermocouple calibration number and measurement range currently displayed on the thermostat are identical to the real thermocouple, with no mismatches.
Static Accuracy Verification: Place the thermocouple cold junction in a constant temperature environment and confirm that the deviation between the cold junction temperature displayed on the thermostat and the actual ambient temperature is ≤ ±0.5℃. This indicates that the cold junction compensation function is functioning properly.
If possible, immerse the thermocouple hot junction in a constant temperature bath and compare the thermostat display value to the typical thermocouple readings at 3-5 temperature points. A temperature measurement inaccuracy of ≤ ±1℃ over the whole temperature range is considered qualified.
Hot Condition Verification: Start the hot runner temperature management system, select the goal production temperature, and look for a smooth temperature rise curve with no leaps, lag, or abrupt changes. After reaching the set temperature, the hot runner is kept at a steady temperature for at least 30 minutes to ensure the Husky temperature controller's fluctuation range is stable within ±1℃, with no unidirectional drift or random leaps.
The actual temperature at the appropriate position in the hot runner is measured and compared to the display value on the Husky temperature controller. If the variance is ≤±3℃, the temperature measurement accuracy is validated as fully compliant.
Production Operation Verification: Injection moulding production begins, and at least two complete moulding cycles are run simultaneously. It has been confirmed that the Husky temperature control system has no temperature alarms throughout the process, the PID control output is stable, the load current of each heating section of the hot runner has no abnormal jumps, and the product moulding state is stable and free of temperature control defects. This ensures that the calibration was completed successfully.
This verification technique is completely tailored to the Husky temperature controller's specifications, ensuring 100% confirmation of the thermocouple calibration effect and preventing subsequent temperature control failures due to incomplete calibration.
