Displacement sensors have been widely used in industry, water conservancy, petroleum, coal mines, and liquid level measurement. They are simple to use, high precision, and good stability. So where do we start in selecting them?

The so-called displacement sensor is a system device. As a measuring device, the displacement sensor plays a key role in many applications. It is used to measure the surface of mechanical displacement and the displacement of mechanical changes in industrial processing. Displacement sensors can be divided into analog displacement sensors and digital displacement sensors according to signal output. The resistive capacitive and inductive eddy current types we usually see are all analog displacement sensors. They have the same characteristic of being simple in structure. Compared with digital displacement sensors, which convert the measured displacement change output into digital direct reading, it is still more complicated than analog displacement sensors, but its advantage is that the measurement accuracy is relatively high, which allows us to know the measured displacement change more accurately.

Displacement sensors have higher accuracy requirements in detection, such as the stability requirements for ambient temperature and the accurate control requirements for motion organizations. At present, in order to solve the problem of sensor installation when detecting displacement, the researchers have developed a laser displacement sensor, which uses the echo analysis principle to measure the distance to achieve a certain degree of accuracy. The sensor is composed of a processor unit, an echo processing unit, a laser transmitter, a laser receiver and other parts. At present, in the displacement sensor production industry, the detection distance of displacement is the most popular topic. Perhaps measuring displacement is not the ultimate purpose, but the size of the displacement change and the required measurement accuracy are a series of questions that correspond to what kind of application.

In short, the buyer of the displacement sensor needs to know the working principle of the displacement sensor and the installation method of the displacement sensor, and then know how to select it. Displacement sensors are similar to other sensors in that they convert the changes seen in reality into electrical signals. Usually, the choice of sensor is determined based on the size of the displacement change and the accuracy required by the user, and its error is considered, and whether its travel distance will affect the user's application environment and data collection, etc. Similarly, displacement sensors are sensitive equipment. When purchasing, it is necessary to warn of the precautions for use so that the sensor has a longer service life.