Meter Ferrous Coating Thickness Gauge Lightweight 10 * 10mm Minimum Substrate

 
Product Description
WH82 coating thickness gauge is a portable meter. It is capable of measuring coating thickness quickly, precisely and without injury, both for the laboratory and engineering environment. It is currently widely used in manufacturing, metal processing industry, chemical industry, commodity inspection and testing fields, and is essential for material protection major.
 
Quick detail:
1) Automatic identify ferrous and non-ferrous substrate quickly.
2) Power voltage indicator.
3) Speaker beep while operating.
4) Power-off automatically when idle; manually power-off available.
 

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.