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|Principle:||Magnetic, Eddy Current||Measuring:||Range 0-1500μm|
|Tolerance:||± (2%H+2) (μm)||Display:||LED Backlight|
|Magnetic Method (Fe):||Non-magnetic Coatings On Steel, Iron||Eddy Current Method (NFe):||Non-conductive Coatings On Copper, Aluminum|
non destructive testing machine,
portable surface roughness tester
Fe and NFe Coating Thickness Tester Measuring Range 0-1500μm Non Destructive Testing Machine
The non-destructive coating thickness measurements can be taken on either magnetic steel surfaces or non-magnetic metal surfaces such as stainless steel or aluminium. Digital coating thickness gauges are ideal to measure coating thickness on metallic substrates. Electromagnetic induction is used for non-magnetic coatings on ferrous substrates such as steel, whilst the eddy current principle is used for non-conductive coatings on non-ferrous metal substrates.
Magnetic Method (Fe): Measuring the thickness of non-magnetic coatings on steel, iron and other ferromagnetic metal substrates, e.g. painting, varieties of anti-corrosion coating, powder spraying, plastic, rubber, synthetic material, phosphate coating, chromium, zinc, Aluminum, tin and cadmium, etc.
Eddy Current Method (NFe): measuring the thickness of non-conductive coatings on copper, aluminum, stainless steel and other non-ferromagnetic substrates, e.g. painting, varieties of anti-corrosion coating, powder spraying, plastic, rubber, synthetic material, oxide film and phosphate film, etc.
|Display||High Contrast Segment Liquid Crystal Display (LED Backlight)|
|Statistics||N, MAX, MIN, MEAN and STD.DEV|
|Calibration||Zero, One-Point and Two-Point Calibration|
|Auto Power-off||Auto off after 3 minutes of inactivity|
|Power||2AA size batteries, low-voltage indication function|
|Weight||200g including batteries|
Main Unit -- 1 pc
Calibration Foils-- 1 set
Zero Plate(Fe/Al)--1 pc
User Manual, Packing List, Warranty Card -- 1 pc
**Note: Without Battery if By Air Transportation.**
|Measuring Principle||Magnetic||Eddy Current||Magnetic/Eddy Current||Magnetic|
|Low Range Sensitivity||0.1||0.1||0.1||1|
|Min. Curvature Radius||5||5||5||10|
|Min. Measuring Surface||20||20||20||40|
|Min. Substrate Thickness||0.5||0.5||0.5||2|
Why you need to Calibrate a Coating Thickness Gauge before testing?
Calibration of coating thickness gauges will be affected by the type of material, the shape and the surface finish of the metal substrate to be tested.
For example the magnetic properties of steel alloys vary and the conductivity of different aluminium alloys and different non-ferrous metals, copper, brass, stainless steel etc. also vary. These variations can affect the linearity of a coating thickness gauge. This means that a gauge set-up on mild steel for example will read a different value for the same thickness coating on high carbon steel. Similar linearity effects are seen on thin or curved substrates and particularly on profiled substrates such as blast cleaned steel used for structural steelworks.
To overcome these effects most coating thickness gauges have features that allow you to set the gauge to the work being carried out, thus maximising the accuracy of the readings.
Adjusting a Coating Thickness Gauge
Adjustment is the technique whereby you can set-up the coating thickness gauge for the conditions prevailing for the work in hand. In addition to material differences, shape and surface finish the adjustment may be carried out at an elevated temperature or in the presence of a stray magnetic field. By adjusting the coating thickness gauge to these prevailing conditions the resulting errors are greatly reduced and even eliminated.
The effect of surface roughness, particularly that produced by deliberately profiling the substrate by blast cleaning with either grit or shot or by mechanical cleaning, is quite significant.
Contact Person: Mr. Raymond Chung