Coating Thickness Gauge Common Faults and Solutions
The coating thickness gauge frequently fails due to inconsistent indication, significant measurement errors, and blank screens. The device itself, the characteristics of the workpiece being measured, and the effect of people are the causes of these failures. Below, Zhuhai Tianchuang Instrument Co., Ltd. will outline typical coating thickness gauge failures and possible fixes.
1. The display value is unstable
The peculiarities of the workpiece's structure and material, such as whether it is made of a magnetic material, are the main causes of the coating thickness gauge's unreliable display. We must select a magnetic coating thickness measurement if the material is magnetic. It is necessary to use an eddy current coating thickness gauge if the workpiece is a conductor. Furthermore, the instrument's display of unstable readings is significantly influenced by the measurement piece's attachments and surface roughness. The attachments that prevent the thickness gauge probe from making close touch with the covering layer's surface can cause it to malfunction.You must make sure the probe is in direct touch with the coating's surface. Therefore, the key to removing this form of problem is to clean off any tiny particles, oil, corrosion products, and other attachments from the tested part's contact surface prior to measurement, but leave any covering materials in place. The surface of the substrate being used must also be cleaned and lubricated when the system is zeroed.
2. Large errors in measurement results
The probe's manner of positioning has a significant impact on the measurement. The probe should remain parallel to the surface of the object being measured throughout the measurement. Additionally, the probe positioning period shouldn't be too long to prevent interference from the matrix's magnetic field. When measuring, avoid dragging the probe because doing so not only wears down the probe but also compromises the accuracy of the measurement. Additionally, the measurement base's surface is rusted, the measurement base's thickness is too tiny, the workpiece's curvature is too small, the measurement base is magnetized, there is electromagnetic field interference near the measurement site, etc.which may lead to abnormal measurement results. There may be a crash phenomenon.
3. The screen does not display data
The easiest thing to do is to see if the battery has enough power. The probe and connection may be loose, disconnected, or have poor contact, and the battery may be corroded after a leakage if the measurement still does not display the value after ensuring that the battery power is enough. influenced by things like the instrument's electrical parts. The editor has really experienced the phenomenon where the probe is chemically damaged by incorrect use, preventing the instrument from presenting data.
4. Human factors
The reason why the coating thickness gauge can measure to the micron level is that it can take small changes in magnetic flux and convert it into a digital signal. If the user is not familiar with the instrument during the measurement process, he may make the probe deviate from the measured object, causing the magnetic flux to change and cause wrong measurement. When the user uses the instrument for the first time, he must first carefully study the instruction manual and master the measurement method.
5. The instrument itself fails
Thickness gauges that have been in the working state for a long time are very likely to have shocks, falls, and other accidents, or the working environment has magnetic field interference, which will cause interference and damage to the electronic components inside the instrument. , resulting in unreliable measurement data of the instrument, garbled data display on the screen, and even inability to start the machine, etc. Therefore, it is recommended to ensure that the instrument is used and kept by a special person as much as possible, and returned to the factory for repair in time when a fault occurs, and it is not allowed to disassemble the machine for inspection without authorization.
