automotive Coating Thickness Gauge WH-82 with LCD screen

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Principle

The device uses magnetic thickness measurement method, which non-destructively measures thickness of non-magnetic coating (such as: aluminum, chromium, copper, enamel, rubber, paint, etc.) on magnetic metal substrates (such as steel, iron, alloy and hard magnetic steel, etc.).
Magnetic Method (F-type probe): When the probe contacts the cover layer, the probe and magnetic substrate forms a closed magnetic circuit; Due to the presence of non-magnetic coating, magnetic resistance changes. The thickness of the cover layer can be derived by measuring the change.
Eddy Current Method (NF-type probe): When the probe contacts the cover layer, the probe and non-magnetic substrate forms Eddy Current and gives feedback to the coil inside the probe. 
The thickness of the cover layer can be derived by measuring the feedback.

 

Name
Specification
Model 
WH 82 
Principle
Magnetic Method (F-type probe)&Eddy Current Method (NF-type probe)
Range
0-1250um
Accuracy error
zero calibration ± (1 + 3% H);
two-point calibration ± [(1% – 3% H)] H + 1.5
 
Power
2 * AA battery
Unit
Um/mil
Temperature
0-40 ℃
humidity
≤85%
Minimum Substrate
10 * 10mm
Minimum curvature
5mm convex; 5mm concave
Thinnest substrate
0.4mm
Weight
99g
 Size 
110mm * 65mm * 30mm

 

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