The main factors affecting sensor recovery time include ambient humidity, baking temperature and time, cooling method, and sealed storage conditions. Especially in the high-temperature and high-humidity environment of Wuhan, these factors directly determine drying efficiency and reuse success rate.
1. Ambient Humidity: A Key Constraint on Recovery Speed
Low humidity environment (<60%RH): Less prone to secondary moisture absorption after purging, shortening natural drying time and improving overall recovery efficiency;
High humidity environment (>85%RH, such as Wuhan's rainy season): Recondensation can occur within 10 minutes of exposure, requiring immediate baking; otherwise, recovery time will be extended by more than 50%.
2. Baking Temperature and Time: Determines Internal Dehumidification Depth
Conditions Recovery Effect
60°C / 4~6 hours Optimal combination, internal moisture fully evaporates, recovery rate >85%
<4 hours or <50°C High residual moisture, insulation resistance difficult to meet standards, failure rate ↑
>80°C Risk of thermocouple material degradation ↑, prohibited from use
Engineering Demonstration: Baking at 60°C for 5 hours, moisture-damaged sensors achieved a recovery rate of 92%.
3. Cooling Method: Prevents Secondary Contamination from Condensation
Natural Cooling in Drying Oven: Prevents condensation of moisture in the air, crucial for ensuring stable insulation resistance;
Cooling Exposed to Air: Temperature differences cause condensation, resulting in falsely low insulation values, mistakenly judged as unrecoverable.
4. Sealed Storage and Operation Procedures: Ensuring a Closed-Loop Recovery
Initiate baking within 30 minutes of purging: Seamless connection can shorten processing time by 40% and prevent moisture backflow;
After baking, seal in a moisture-proof bag with desiccant: Prevents secondary moisture absorption during the assembly process;
Use moisture-proof gloves during operation: Prevents hand sweat from contaminating the connectors and affecting insulation performance.
