Common Issues Encountered in Using Probes of Coating Thickness Gauges
When repairing the coating thickness gauge probe, it is often found that the magnetic core is severely worn, and some can be said to be severely damaged. For example, the gemstone core of N1 head is often damaged and broken, and the arc core of F1 head magnetic core is flattened or deformed.
Firstly, it is normal for the probe to wear out during use. But if users pay attention to its characteristics, it will prolong its service life.
The common problem is that during measurement, due to the usual downward testing, users often exert more force on the downward pier, which can easily cause the failure of the probe core over time. The correct method of use is to gently press the probe towards the surface of the workpiece being measured when it is one centimeter away, as the probe is designed with a built-in sensing pressure spring that only needs to be gently pressed down. On the other hand, during the repeated movement of the probe, it is easy to collide, bump, or collide with other objects, which can also cause damage to the probe. Therefore, if working conditions permit, the probe can be fixed and the workpiece being measured can be brought into contact with the probe to reduce the probe's collision.
There is also a situation where, during measurement, the measuring head must be lifted and not pulled flat every time the next point is measured, in order to reduce the wear of the magnetic core.
Finally, the probe must be kept away from strong magnetic fields to avoid changing the natural frequency of the probe and causing it to malfunction. The correct operation prolongs the service life of the instrument.
