Whether it is a linear displacement sensor or a rope displacement sensor, it often encounters a variety of problems when it is used, including quality problems, application problems, environmental problems, etc., but the use of problems is common, and improper use is easy to damage the sensor. Therefore, we need to pay attention to all aspects when using the sensor to ensure the normal use of the sensor. Today, we will focus on the matters we should pay attention to in the use of linear displacement sensors.
1. The problem of small power supply capacity of linear displacement sensor
If the power supply capacity is insufficient, the following conditions will be formed: the movement of the melt will cause the appearance of the clamping electronic ruler to change and fluctuate, or the movement of the clamping will cause the visualization of the injection electronic ruler to fluctuate, resulting in a large measurement error. This situation is more likely to occur when the driving power supply of the solenoid valve is shared with the power supply of the linear displacement sensor.
2. What are the requirements for the alignment, parallelism and viewpoint of the linear displacement sensor?
The installation of linear displacement sensors requires high sensor alignment, but the parallelism can tolerate an error of ±0.5mm, and the viewpoint can tolerate an error of ±12°. However, if the parallelism error and viewpoint error are both large, the number jumps will appear. When this happens, it is necessary to adjust the parallelism and viewpoint.
3. The problem of incorrect wiring of the linear displacement sensor
The three wires of the linear displacement sensor cannot be connected incorrectly, and the power line and output line cannot be interchanged. If the above wires are connected incorrectly, there will be a large linearity error. If there is a need, our company has a video of the wiring tutorial for your reference.
4. The problem of frequency modulation disturbance and electrostatic disturbance
Both FM and electrostatic disturbance may make the display of the electronic ruler jump digitally. Therefore, the signal line of the electronic ruler and the strong current line of the equipment should be separated from the wire duct. It is necessary for the electronic ruler to be grounded mandatorically. The signal line needs to use a shielded wire, and a section of the electrical box should be grounded with the shielded wire. If there is a high-frequency disturbance, the voltage measurement using the multimeter will usually appear normal, but the display number will be constantly beating; In the case of electrostatic disturbance, the situation is the same as that of high-frequency disturbance. To prove whether it is static disturbance, you only need to use a section of power cord to connect the cover screw of the electronic ruler with some metal on the machine, and the static disturbance will be eliminated immediately after a short connection. However, if you want to eliminate the high-frequency disturbance, it is difficult to use the above method, you can try to pause the high-frequency disturbance source to see if the results will be better, so as to judge whether it is a problem of high-frequency disturbance.
5. The data is beating regularly, or there is no problem with the data
In this case, it is necessary to check whether the insulation of the connecting wire is damaged, and it is in regular contact with the shell of the machine, resulting in a short circuit to the ground.
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