How does the temperature sensor measure good or bad?The principle and application of temperature sensor

In fact, there are many types of temperature sensors distributed on automobiles, so the way to judge whether they are good or bad for most temperature sensors is also different. And no matter what kind of sensor, after using it for a period of time, the owner should check it in time. After all, once the temperature sensor is damaged, it will actually affect the normal use of the vehicle, mainly because the temperature sensor basically has functions in all parts of the vehicle.

The more common ones are the air conditioner sensor, the coolant temperature sensor, and the intake air temperature sensor. In the process of daily use of the car, the coolant temperature sensor and the intake air temperature sensor are more common. For the coolant temperature sensor, the standard for judging whether it is good or bad is to see if the temperature sensor can adjust the water temperature. If there is no way to adjust the water temperature, the engine will not be able to work normally, which will make it difficult to start the car.

As for the intake air temperature sensor to judge whether it is good or bad, the owner needs to observe whether there is any vibration when the engine starts and whether there is black smoke from the exhaust place during the use of the vehicle. If these conditions appear, it means The intake air temperature sensor was damaged and could not be used normally, resulting in abnormal fuel injection.

Moreover, the working principle of the temperature sensor is actually very simple. It mainly uses the sensor designed on the principle of metal expansion, that is, the metal will produce a certain extension phenomenon after the ambient temperature changes, so the sensor can respond to this behavior in different ways. The reaction performs the transformation of the signal. So far, the application range of sensors is also very wide. In addition to automobiles, they are also used in sterile rooms, clean factories, banks, libraries, archives, cultural relics and other places.