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What are the Causes of NTC Temperature Sensor Damage?

Mar 15, 2024

    In the use of NTC temperature sensors, no matter what kind of appearance, structure and principle are very different, generally conventional NTC temperature sensors have many styles: 1. Epoxy resin type, 2. Stainless steel sleeve type, 3. Plastic Sleeve type, 4. wear OT hardware type, 5. thread style, etc.; NTC temperature sensors are generally packaged after welding wires from core components, and some need to add connecting terminals at the end. Using an NTC temperature sensor, under a certain measurement power, the resistance value decreases as the temperature increases. Utilizing this characteristic, NTC thermistor can determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of temperature detection and control. In practical applications, we will encounter damage to the temperature sensor. Generally speaking, NTC will show higher resistance or crack directly. The possible reason is that the current in the circuit suddenly increases and the temperature rises abnormally. NTC temperature measuring element The resistance will suddenly decrease, and the decrease in resistance will further cause the current to increase. This vicious cycle will eventually lead to weld melting, wire melting, electrode diffusion, burning and other results, ultimately leading to irreversible damage.

    If the temperature and humidity exceed a certain range, the resistance will become smaller, and it is easy to corrode and mold. The appearance and structure of the metal NTC temperature sensor may become damp and moldy due to environmental factors during use, resulting in poor contact or short circuit, thereby damaging the resistor.

    When the current starts to work, it may cause huge energy to be loaded onto the NTC temperature sensor instantly. If the product is defective during the production process, the NTC temperature sensor may not be able to withstand it and may be damaged. Generally speaking, NTC temperature sensors will exhibit higher resistance or simply crack. In daily use and maintenance, if the NTC temperature sensor fails, we can check the above faults and ultimately determine the exact cause of damage to the NTC temperature sensor.

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