The pull rope displacement sensor, also known as the pull wire displacement sensor, is a linear device that belongs to metal induction. It is a new and simple length displacement sensor. The measurement of displacement is generally divided into two types: measuring the size of physical objects and mechanical displacement. It has a wide range of applications and features a compact structure, long measurement stroke, small device space size, high measurement accuracy, good reliability, long service life and low maintenance. In addition, the rope displacement sensor device is convenient to use and suitable for application in many risky situations, and is widely used in the measurement field. This article primarily introduces the wiring and installation of the pull rope displacement sensor.

Firstly, when displacement sensors are in use, it is very easy for the circuits to age and wear out due to mechanical movement. Meanwhile, during the usage process, a large amount of impurities, water mixtures and oil can easily enter, all of which will have a very serious impact on the contact resistance of the brush. A common situation is that the data output by the sensor is not very stable, and the digital display numbers will frequently fluctuate. Therefore, when choosing a displacement sensor, it is necessary to make a reasonable selection based on the usage site of the displacement sensor.

Secondly, regarding the issue of power supply, here we need to exclude those displacement sensors that do not require self-powered supply. The power supply for ordinary displacement sensors is 24 volts. If the power capacity decreases, the movement of the glue will cause the display of the mold closing electronic scale to change or fluctuate. It may also cause the mold closing movement to cause fluctuations in the glue injection displacement sensor, resulting in relatively large measurement errors. If the driving power supply of the solenoid valve and that of the linear displacement sensor are both in the same place, it will be very easy for these situations to occur. If the situation is very serious, the voltage fluctuation can be tested with a multimeter.

Finally, there is interference from frequency modulation and static electricity. The signal line of the displacement sensor should be separated from the strong current of the equipment. The displacement sensor should be supported by a grounding bracket, and its casing should be in contact with the ground. To check whether the displacement sensor is generating static interference, it is advisable to connect the cover screw on the displacement sensor to some metal segments on the equipment with a power cord. Once connected, the static interference will disappear.