What is the cause of the interference that sometimes occurs when I switch on my computer?
After switching on the instrument screen appears to measure the status arrow can not be measured again, it means that the instrument has been interfered with. There are two main reasons.
(1) The probe is too close to the iron base when switching on, and it is interfered because of the influence of the magnetic field of the iron base.
(2) The probe is not inserted properly or the probe wire is damaged.
Coating and cladding measurement has become an important part of the processing industry, surface engineering quality testing, is a product to achieve superior quality standards necessary means. In order to make the product internationalisation, China's export commodities and foreign-related projects, the coating cladding thickness measurement has clear requirements and regulations.
Coating thickness measurement methods include: wedge-cutting coating measurement, optical cut-off coating measurement, electrolytic coating measurement, thickness difference measurement, weighing coating measurement, χ-ray fluorescence coating measurement, β-ray backscattering coating measurement, capacitance coating measurement, magnetic measurement and eddy current measurement method to measure the thickness and so on. The first five of these methods are lossy, cumbersome measurement means, slow, more applicable to sampling inspection. With the increasing progress of science and technology, especially in recent years, the use of magnetic measurement of coating MC-2000 series and eddy current method of MCW-2000B coating thickness gauge to the miniature, intelligent, multi-functional, high-precision, practical direction into a big step. Measurement resolution has reached 1 micron, accuracy of up to 1%, a substantial improvement. Coating thickness gauge applicable to a wide range, wide range, easy to operate and inexpensive, is the most widely used in industry and scientific research coating thickness gauge.
