Specific Steps for Quickly Re-verifying Hot Runner Sensors

Layered simplicity and advance planning are essential for rapidly re-verifying hot runner sensors. Verification can be finished in one to two hours using the following standard operating procedures:

 

Step 1: Advance Preparation (10–15 minutes; can be finished during the downtime for the mold change)

Concurrently Making Use of Downtime: While you wait for the hot runner cooling or mold change, concurrently do the following tasks:

Take out the conventional thermocouples and the pre-calibrated infrared thermal imager. They have been calibrated weekly in advance, so no interim calibration is required.

Verify the tightness of the sensor and remove any carbon buildup and leftover plastic from the sensor mounting holes.

For verification, export the current process settings and obtain the sensor's original position file.

Pre-heating Preparation: Clean... Once the first treatment is finished, turn on the hot runner system to reach the desired temperature and start the stabilization stage early.

 

Step 2: Quick First Screening (10–20 minutes)

To fully manifest frictional heat, continually make five high-speed injection molds in accordance with the target procedure once the temperature has stabilized.

Open the mold right away, then use an infrared thermal imager to scan the whole hot runner surface:

Examine the nozzle tip, flow divider cone, and other high-shear regions, noting any unusual hot spots.

Verify that the greatest local temperature differential is no more than 5°C. If there are hot spots, note the location so that it can be adjusted later.

Go straight to the following stage if there are no unusual hot spots. Before proceeding, adjust the sensor position if there are unusual hot spots.

 

Step 3: Core Verification (30 to 60 minutes; choose items based on the circumstance)

Choose simpler items based on the verification scenario, omitting procedures that aren't necessary:

Situation | Core Verification Procedures

Regular Quarterly Verification 1. Hold for fifteen minutes (the holding period may be shortened by preheating). 2. Use a multi-channel temperature recorder to simultaneously gather TUS data from all sensors 3. Automatically determine each sensor's deviation from the reference thermocouple; verify ≤±2°C for compliance

Verification Following Defect/Anomaly Troubleshooting and Position Adjustment 1. Attach the melt temperature meter straight to the outlet (direct connection interface reserved). 2. Gather data continuously for ten cycles, then compute the average deviation. 3. Verify conformance with the frictional heat error ≤+5°C.

 

Step 4: Archiving Conclusion (5–10 minutes)

The compliance result is automatically output by the apparatus. If every item satisfies the requirements and the existing parameters are set, verification is finished.

Mark any item that doesn't meet the requirements, reposition it, and check again until compliance is attained.

Finish archiving and update the verification data in the sensor position file.

Do you want me to make you a short verification on-site operating checklist so you can follow it exactly when you get to work and don't miss anything?