Regulations of using plating thickness gauges

An instrument for thickness measurement of coatings on the surface protection of materials and coatings, including coatings, plating, overlays, chemically wet films, etc. (referred to as coatings in relevant and international standards). Coating thickness measurement has become an important part of the processing industry and surface engineering quality testing, and is the means for products to achieve superior quality standards. In order to internationalize products, China's export commodities and foreign-related projects have coating thicknesses. 

The rules to be observed when is using the instrument:

Based the metal characteristics,for the magnetic method, the magnetic properties and surface roughness of the base metal of the standard sheet should be similar to the magnetic properties and surface roughness of the test piece base metal. For the eddy current method, the electrical properties of the standard sheet base metal should be similar to the electrical properties of the test piece base metal.

b Base metal thickness, checking whether the base metal thickness exceeds the critical thickness. If not, use one of the methods in 3.3 to calibrate.
c Edge effects should not be measured close to the specimen's sudden changes, such as edges, holes and inner corners.
d Curvature should not be measured on the curved surface of the test piece.
e The number of readings is usually due to the fact that each reading of the instrument is not exactly the same, so several readings must be taken within each measurement area. The local difference in the thickness of the cover layer also requires multiple measurements in any given area, especially when the surface is rough.Before the surface cleanliness is measured, any attached substances on the surface, such as dust, grease and corrosion products, etc., but paint thickness gauge do not remove any covering material.

Selection of coating thickness gauge:

Users can choose different electronic coating thickness gauge according to the needs of measurement. Magnetic thickness gauges and eddy current thickness gauges generally measure thicknesses of 0-5 mm. These instruments are divided into probes and mainframes. The probes are separated from the main unit. Easy to operate, the latter is suitable for measuring non-planar shapes. Thicker dense materials should be measured with an ultrasonic thickness gauge and measured to a thickness of 0.7-250 mm. Electrolytic thickness gauges are suitable for measuring the thickness of gold, silver and other metals plated on very thin wires.

Instrument features:

* Dual-function built-in probes are used to automatically identify iron-based or non-ferrous matrix materials, and select the appropriate measurement method for accurate measurement.
* Ergonomically designed dual display structure for reading measurement data at any measurement location.
* It is easy to operate with the menu selection function.
* The upper and lower limit values can be set. When the measurement result exceeds or meets the upper and lower limit values, the instrument will give a corresponding sound or flashing light.
* High stability, usually long-term use without correction.