How to Determine if a Temperature Equivalent Sensor Has Fully Recovered

Determining if a temperature equalization sensor has fully recovered requires comprehensive verification through three aspects: insulation resistance, signal stability, and system function. Especially in the high-temperature and high-humidity environment of Wuhan, it is essential to ensure that all indicators meet closed-loop standards before normal use.

1. Electrical Performance Recovery: Insulation and Circuit Resistance Meet Standards

Insulation Resistance > 100MΩ (500VDC test): Use a megohmmeter to measure the resistance between the casing and the signal line to confirm that internal moisture has been completely removed;

Circuit Resistance within the range of 2~10Ω: Use a multimeter to test the thermocouple circuit to rule out open circuits or poor contact;

Repeat the test three times and take the average: A difference of <10% is considered stable, avoiding random errors.

2. Signal Stability Recovery: No drift, no glitches

30-minute power-on test run: Temperature drift < 0.5℃/h (steady-state condition); No transient glitches (> 5℃/s) or jumps;

Primary/backup temperature difference monitoring: Average difference < 0.5℃; Number of instantaneous out-of-range (> 2℃) errors: 0;

AI health weight restored to ≥ 0.8: The PHM system completed learning within 24 hours, indicating data reliability.

Engineering Value: A medical company, through a 30-minute stability test, controlled the post-reuse failure rate to within 2.3%.

3. System Functional Closed-Loop Verification: Temperature Control and Fault Tolerance are Normal