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Working Principle Of Coating Thickness Gauge

- Nov 05, 2018 -

working principle of coating thickness gauge

The coating thickness gauge measures the thickness of the coating by electromagnetic induction. 

The probe on the surface of the component creates a closed magnetic circuit that changes to varying degrees as the distance between the probe and the ferromagnetic material changes, causing changes in magnetoresistance and probe coil inductance. 

Using this principle, the distance between the probe and the ferromagnetic material, ie the thickness of the coating, can be accurately measured.

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