What is the reason why the coating thickness gauge sometimes interferes when it is turned on?
If the measurement status arrow appears on the instrument screen after startup and cannot be measured again, it indicates that the instrument has been interfered with. There are two main reasons:
(1) When starting up, the probe is too close to the iron-based material due to interference caused by the iron-based magnetic field.
(2) The probe is not properly inserted or the probe cable is damaged.
Coating and overlay measurement has become an important part of the processing industry and surface engineering quality inspection, and is a necessary means for products to achieve excellent quality standards. In order to internationalize our products, there are clear requirements and regulations for the measurement of coating thickness in China's exported goods and foreign-related projects.
The main methods for measuring coating thickness include: wedge cutting coating measurement, light cutting coating measurement, electrolytic coating measurement, thickness difference measurement, weighing coating measurement, X-ray fluorescence coating measurement, beta ray backscatter coating measurement, capacitance coating measurement, magnetic measurement, and eddy current measurement for thickness measurement. The first five of these methods are lossy detection, which has cumbersome measurement methods, slow speed, and is mostly suitable for sampling inspection. With the increasing progress of science and technology, especially in recent years, the use of magnetic measurement coatings and eddy current coating thickness gauges has taken a big step towards miniaturization, intelligence, multifunctionality, high precision, and practicality. The measurement resolution has reached 1 micron and the accuracy can reach 1%, which has been greatly improved. The coating thickness gauge has a wide range of applications, a wide measuring range, easy operation, and is inexpensive, making it a widely used coating thickness gauge in industry and scientific research.
