Precautions When Using Coating Thickness Gauge
Many people will ask, why are the data obtained by operating the coating thickness gauge in the same place different? Why is the measurement result prone to large deviations? What should be paid attention to when using the coating thickness gauge? For newbies, the measurement operation seems more difficult to control than imagined. It is easy to think that the instrument is malfunctioning. In fact, many years of operating experience with coating thickness gauges tell us that it is actually caused by the operator's improper operation. Therefore, in the product inspection process, the correct use of the coating thickness gauge becomes the top priority.
We all know that the coating thickness gauge is a convenient instrument that mainly uses the principle of magnetic induction or eddy current to measure the thickness of non-magnetic coatings on magnetically permeable materials. This measurement method has convenient operation , high accuracy and good stability. It is widely used in manufacturing, machining and testing, chemical industry and other industries.
What should be paid attention to in the process of using the coating thickness gauge? There are two main aspects. One is the operation of the coating thickness gauge and the other is the maintenance of the coating thickness gauge.
When operating the coating thickness gauge, first we need to confirm that the coating is dry and ensure that the probe is placed smoothly, so as not to cause an error between the measured value and the actual value. When using, pay attention to calibration to ensure the smallest possible error range of the measured value. In order to improve the accuracy of the measurement results, multiple measurements can be made. The average value of the multiple measurement results is calculated as the final measurement result. Coating thickness gauge maintenance is also very important. Do not shake the instrument and the probe strongly during use to avoid damage to the instrument. Choose a dry environment for storage. In addition, after long time use, the coating thickness gauge is easy to fall off. Pay attention to remove the dirt on the cable to prevent the probe line from aging or breaking. If it is not used as a coating thickness gauge for a long time, take out the battery to avoid corrosion of the host board.
The factors that affect the coating thickness gauge accuracy are the magnetic properties of the base metal, the thickness of the base metal of the instrument, the edge effect and sensitivity of the instrument to the test piece, the curvature of the test piece, the roughness of the test piece, the attached substance, the side Head pressure, probe orientation and placement. Therefore, during use, coating thickness gauges with different qualities also have an effect on the measurement results. But in general, coating thickness gauges are convenient and practical.
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