The Common fault of displacement sensor(一)

    The common faults

    The working principle of a linear is like sliding rheostat, it is used as a voltage divider, which is based on the output voltage relativeto show actually position measurement location. The device has the following several requests to work:

     1.If the electronic scale has been used for a long time, and the sealing is aging, and mixed with a lot of impurities, and water mixture and oil will seriously affect the contact resistance brush,which will make the digital display does not stop beating. This time can say electronic ruler of the linear displacement sensorhas been damaged, need to be replaced.

     2.If the power supply capacity is very small, so there will be a lotof,, power supply and need to have full capacity. So, lack of capacity, it will cause the following situation: melt games to show transform, clamping electronic scale fluctuations, or closinggames to display wave injection electronic scale, measurement errors due to large. If the drive power of electromagnetic valve in the linear displacement sensor power supply at the same timetogether, more prone to the above situation, and even can be measured to the voltage fluctuation in serious condition with universal voltage meter. If not because of the high frequency interference, electrostatic interference or neutral not good cause,then the power supply may be too small by.

     3.FM interference and the electrostatic interference are likely to make electronic scale linear displacement sensor display digital.

     Power lines and signal lines of electronic scale equipment to separate line groove. Electronic scale must be mandatory use ofground support, but also allow electronic ruler shell has good contact with the ground. The signal line needs to use the shielded wire, and the electric box of a should tell the shielding wiregrounding. If you have high frequency interference, usually shows normal universal voltage measurement will list, but display digitalwill beat continually; and the emergence of electrostaticinterference, the case also with the high frequency interference.

Sprocket for Conveyor Chain

     To prove whether it is static, you can first use a power line tosome metal electronic scale sealing machine screws with short it can, as long as a short circuit, electrostatic interference, will be immediately eliminated. But if you want to eliminate the high frequency interference is very difficult to use the above method,frequency section electric appliances and machine hand often appear in high frequency interference, so you can try to stopmethod of high frequency electric or mechanical hand to verify Is it right High-frequency interference.

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