Extending the lifespan of temperature equalization sensors requires comprehensive management through three aspects: environmental protection, regular maintenance, and standardized operation. Especially in the high-temperature and high-humidity environment of Wuhan, this can significantly slow down the aging process, increasing the average lifespan from 12 months to over 24 months.
1. Strengthen Environmental Protection (Core Measures for High Humidity)
|
Protective Measures |
Implementation Points |
Expected Results |
|
IP67-rated aviation connector + anti-rust coating |
Prohibit the use of ordinary plastic connectors; mandatory use of metal-plated interfaces |
Prevents oxidation and corrosion of wiring terminals. |
|
Nano-coated three-proof coating |
Sprayed at connectors and cable connections; recoated quarterly |
Blocks moisture intrusion; insulation value maintained >100MΩ. |
|
Miniature heating element to prevent condensation |
Installs a 5W heating element inside the junction box; automatically starts when humidity >70%RH |
Keeps the interior dry and avoids condensation corrosion. |
|
Nitrogen purging linkage |
Automatically purges for 3 minutes when the machine stops to remove residual moisture and dust |
Reduces signal drift caused by moisture. |
2. Implement a regular maintenance and rotation mechanism (activate redundant channels).
Primary and backup sensors are rotated every 60 days: This prevents contact oxidation caused by prolonged idleness during the rainy season or in high humidity conditions.
Monthly power-on self-test: Temporarily connect to the system to check resistance, temperature drift, and noise levels to confirm data stability.
Quarterly dual "resistance + insulation" tests: Circuit resistance should be 2~10Ω, and insulation resistance > 100MΩ (500VDC). Any abnormality triggers an alert and replacement.
Project Value: Jiangsu Kangfeite increased the availability of backup channels to 99.6% through monthly self-tests and quarterly rotations.
3. Standardized Operation and System Optimization (Reducing Abnormal Losses)
Avoid Frequent Start-Stops and Thermal Shocks: Rationally schedule production to reduce the number of daily cold starts and lower thermal cycling stress;
Enable 5Hz Low-Pass Filter: Suppress signal glitches, prevent AI miscompensation leading to temperature control oscillations, and extend sensor service life;
Perform 24-Hour Break-In After Replacement: Maintain stable operating conditions to ensure the AI model completes learning and avoids misjudgments caused by parameter mismatches.
