Post-calibration calibration modifications that are necessary:
Verify that the conversion constants created during calibration have been correctly stored to the device's non-volatile memory. This will ensure that the calibration effect is maintained and prevent calibration parameters from being lost in the case of a power outage.
Reproduction and Adjustment of Full-Range Accuracy: Re-output signals at 10%, 50%, and 100% of the range, and retest with a reference calibrator to ensure that there is no accuracy rebound problem after calibration and that the full-range output deviation is still below the device's nominal accuracy.
Thermal Signal Specific Adjustment: For hot runner temperature control calibration scenarios, make point-by-point adjustments to the thermocouple millivolt output and RTD resistance output to ensure that the temperature difference between the signal generator output temperature and the temperature displayed by the temperature control system is ≤ ±0.5°C, which fully satisfies the requirements for hot runner temperature control calibration.
Stability Adjustment: To ensure that there is no continuous offset phenomenon and that the drift amount during an hour is ≤ 0.03% of the range, run the device continuously for an hour and collect zero-point and full-range output data every 15 minutes.
Integration and commissioning of the hot runner production line: Attach to the hot runner temperature control system and simulate thermal signals from 0°C to 400°C across all channels to verify that all temperature control channels respond normally and that there are no signal jumps or communication disruptions.
To validate that the signal generator's output is stable under load and that the signal deviation is within allowable bounds, simulate real hot runner production conditions.
Commissioning pass/fail determination: Before the equipment is formally used on the hot runner manufacturing line, a commissioning record is created and stored once all commissioning items satisfy the requirements.
The calibration procedure must be performed, the deviation must be fixed, and commissioning must be repeated until all indicators are within allowable bounds if the signal deviation during commissioning exceeds the standard.
This straightforward and useful commissioning procedure ensures production line stability by totally eliminating the issue of imprecise hot runner temperature control calibration brought on by instantly putting calibrated equipment online.
