Temperature sensor applied to printer copiers.Human Body Sensor Light

　　With the rapid development of the times, the use of NTC temperature sensors is becoming increasingly widespread. Both household appliances and office automation equipment will have built-in NTC temperature sensors to monitor temperature, making life and work environments more comfortable and convenient. NTC temperature sensors have become an essential component in household appliances and office automation equipment. The following mainly discusses the temperature sensors applied to photocopiers.

　　The photocopier uses a negative temperature coefficient thermistor, and the resistance value of the thermistor at room temperature is usually measured by a multimeter. When a cup of hot water is applied to the thermistor or a live soldering iron is used to approach it, the resistance value will significantly decrease (to below 1K Ω), indicating that the thermistor is normal; If the resistance value of the thermistor remains unchanged or the resistance value is above 5K Ω, it indicates that the thermistor has failed and needs to be replaced. This is just an ordinary testing method. Our company uses a constant temperature oil bath to measure. As long as the measured resistance value is within the accuracy range, the thermistor is fine. If it exceeds the tolerance range, the thermistor will fail.

　　The NTC temperature sensor of the copier is fixed on a metal bracket and encapsulated in a high-temperature resistant film through high-temperature silicone. It is connected to the processing circuit of the copier through an outgoing wire, and its wire is connected to the metal connector and rubber base connector. The temperature sensor is characterized by fast reaction speed, high reliability, good stability, good heat resistance cycling ability, and high temperature resistance. When installed in the fixing device of the copier, it can quickly complete the copying work.

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