Basic Legal Calibration Cycle: According to general industrial metrology management requirements, standard Husky hot runner thermocouples require a 12-month recalibration cycle. This is the benchmark cycle used to ensure compliance with the ISO 9001 quality management system.
Dynamic Adjustment Cycle Under Different Operating Conditions: If the thermocouple is used for extended periods of time in harsh conditions such as temperatures above 800°C and the presence of corrosive plastic volatile gases, the recalibration cycle should be reduced to 3-6 months to avoid thermoelectric drift, which can lead to inaccurate temperature measurements.
To ensure stable product moulding accuracy, it is recommended to recalibrate crucial temperature measurement points used in high-precision injection moulding processes such as automotive and medical applications every 6 months.
If the thermocouple operates for an extended period of time in a low-temperature, clean environment below 400°C, and three consecutive calibrations show drift significantly below the allowable error range, the recalibration cycle can be extended to 12-24 months, balancing accuracy and maintenance costs.
Special Scenarios Causing Pre-Calibration Recalibration:
After disassembling, replacing, or re-welding thermocouples, they must be recalibrated immediately before being used again.
Recalibration is necessary if a temperature controller's measurement variation reaches ±3℃, after excluding hardware damage or loose wiring.
If temperature-controlled moulding problems emerge in injection-molded items and temperature drift is proven as the reason, thermocouples must be recalibrated right away.
This recalibration cycle rule is fully compatible with the usage scenarios of Husky hot runner temperature control systems, meeting metrological compliance requirements while also adjusting to the actual needs of diverse production settings.
