Thickness measurement method of coating thickness gauge
Magnetic thickness measurement
It is suitable for measuring the thickness of the non-magnetic layer on the magnetic material. Magnetic materials are generally: steel\iron\silver\nickel. This method has high measurement accuracy.
Eddy Current Thickness Measurement
It is suitable for measuring the thickness of non-conductive layers on conductive metals. This method is less accurate than the magnetic thickness measurement method.
ultrasonic thickness measurement
This method has not been used in China to measure the coating thickness. Some foreign manufacturers have such instruments, which are suitable for the measurement of multi-layer coating thickness or the occasions where the above two methods cannot be measured. But generally the price is expensive and the measurement accuracy is low. not tall.
electrolytic thickness measurement
This method is different from the above three methods. It does not belong to non-destructive testing and needs to destroy the coating. Generally, the accuracy is not high, and it is more troublesome to measure than other methods.
Radiographic Pachymetry
photothermal thickness measurement
Based on advanced thermo-optical technology (ATO) and digital signal processing technology (DSP), Tumoshi realizes the unique non-contact non-destructive coating thickness measurement technology.
The system controls the light source by computer to heat the coating to be tested in a pulsed manner, and the built-in high-speed infrared detector records the temperature distribution of the coating surface from a distance and generates a temperature decay curve. The decay time of the surface temperature depends on the thickness of the coating and its thermal conductivity. Finally, the specially developed algorithm is used to analyze the surface dynamic temperature curve to calculate and measure the coating thickness to be measured.
