The working principle and fault handling of High precision displacement sensor

A, if the ruler has been used for a long time, and seal already aging, at the same time with many impurities, and the mixture of water and oil will seriously affect the contact resistance of brush, such meetings make pumping in digital display. This time can say displacement transducer electronic feet has been damaged, need to change.

Second, if the power supply capacity is small, there will be a lot of circumstances, so the power supply needs to have sufficient capacity. Then, capacity is insufficient, will cause the following situation: melt the games keep the clamping electronic scale transformation, there are fluctuations, or clamping games make plastic electronic scale showed fluctuations, causing measurement error is large. If the solenoid valve driven by electricity from power supply electronic feet together at the same time, more prone to the above situation, situation serious when measured with a multimeter voltage profile can even to voltage fluctuations. If this is not because of the high frequency interference, electrostatic interference or neutral aren't good enough, then it is possible that the power supply of the power is too small.

Three, frequency modulation interference and electrostatic interference are likely to make linear displacement transducer electronic scale display of digital pulse. Electronic scale signal lines and equipment of high voltage lines to separate trough. Electronic scale must be mandatory use of ground support, and at the same time make electronic ruler of shell contact with the ground well. Signal lines need to use the shielded wire and electric box should be with a shielded wire grounding. If there is a high frequency interference, usually using a multimeter voltage measurements will show normal, but the display number is beating continuously; And electrostatic interference, the scenario is the same as high frequency interference. To prove whether electrostatic interference, to use a power cord to electronic scale block screw machine with some metal short pick up is ok, as long as a sub, electrostatic interference can immediately eliminate. But if you want to eliminate the high frequency interference is hard to use the above methods, variable frequency saver and machine hand often appear high frequency interference, so you can try to use stop section of high frequency electrical or mechanical methods to verify whether high frequency interference.

Four, if the displacement transducer electronic scale in the process of work, at some point in the display data is beating regularly, or when data is not shown, appear this kind of circumstance, there is need to check the cable insulation damage phenomenon, and with the machine shell is very regular contact and cause of short circuit.

Five, the power supply voltage must be stable, the industry needs to accord with + / - % of voltage stability, for example, the reference voltage is 10 v, can allow a plus or minus the fluctuation change, if not, it could cause according to trap fluctuations. But if this time the display of the width of fluctuation in no more than the range of the fluctuation of voltage fluctuation, then electronic scale is normal.

Six, install linear displacement transducer to neutral need is very good, but the degree of parallelism can be allowed to have the error of plus or minus, Angle can be allowed to have the error of plus or minus 12 °. But if the parallelism error and Angle error is big, so there will be a display of digital pulse. Then appear such circumstance, must adjust parallelism and point of view.

Seven, in the process of connection, must be more careful, electronic foot three line is not wrong, you can't switch the power cord and output. If the above line wrong, can appear linear error is large, it is difficult to control, control accuracy will become is very poor, and shows that it is easy to appear beat phenomenon, and so on.