Based on your previous focus on the debugging of hot runner LVDT sensors after replacement, the recalibration cycle is clearly defined by scenario:
Regular Operating Conditions: After replacement and return to normal production, recalibration is required every 3-6 months to avoid long-term vibration and temperature drift accumulating displacement errors.
Special Triggering Scenarios: When the hot runner experiences overheating shutdown, disassembly and maintenance, or needle valve malfunctions or displacement data drift, recalibration must be completed within one week of the change in operating conditions.
High-Precision Injection Molding Scenarios: For scenarios requiring extremely high precision needle valve stroke control, recalibration is recommended every 1-2 months to ensure displacement detection errors are consistently controlled within the micrometer level.
Trigger-Initiated Calibration: When a deviation in the needle valve opening/closing position is detected causing overflow or insufficient glue, recalibration of the LVDT is necessary immediately without waiting for the fixed period.
