Mikrotest® Coating Thickness Gauges

Article No. 11030

Manual Mikrotest, GM5 (0-4 mils)

Manual Mikotest Coating Thickness Gauges
Model GM5 (0-4 mils)
Measuring range 0 - 100 µm, suitable for electroplating and paint coatings on steel

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Features

The MikroTest is a highly durable coating thickness measurement gauge to enable the measurement of non-magnetic coatings on steel using magnetic adhesive force.
A metal casing makes it highly robust and resistant against harsh environmental conditions.
The MikroTest is ideally suited to the non-destructive measurement of non-magnetic coatings such as lacquers, enamels, chrome and zinc on ferromagnetic basis material (steel)
It has been the most widely used coating thickness gauge in the world over the last 40 years
International patents and production ensure that the gauge has the highest technical standards of all analog magnetic coating thickness gauges.
Uses magnetic attraction principle according to DIN EN ESO 2808, method 7A
Made from heavy-duty zinc die-cast housing
Measuring range up to 20 mm
Can be used in all positions because of the weight compensation: horizontal, vertical, overhead
Measurement also possible on curved surfaces
Battery-free operation
Gauges come certified

Technical Attributes

Data

Type:	GM	FM	S3M	S10M	ZN/FE
Range:	0 - 4 mils	0 - 40 mils	8 - 120 mils	.1 - .4 inch	0 - 2.2 oz/ft.²
Application:	Electroplating and thin paint coatings on steel (ST 33 to ST 60)	Paint on steel (ST 33 to ST 60)	Enamel, plastic and rubber on steel (ST 33 to ST 60)		Electrolytic and Hot-Dip Galvanized over Steel
Tolerance:	±.04 mils or 5% of the reading	±.2 mils or 5% of the reading	± 5% of the reading	± 5% of the reading	.025 oz./ft.² or 5% of the reading
Minimum Surface:	.8" dia.	1.2" dia.	1.2" dia.	4" dia.	.8 inch dia.
Min Curvature Radius of the Samples:	.2" convex/ 1" concave	.32" convex/ 1" concave	.6" convex/ 1" concave	.8" convex/ 1" concave	-
Min Base Thickness:	.040"	.040"	.060"	.080"	.040"
Ambient Temperature:	-4°F - 212°F (-20°C - 100°C)
Dimensions:	Gauge - 8.5"x 2.2"x1.2" (215 mm x 55 mm x 29 mm) Plastic carrying case - 9.3"x3.4"x1.8" (235 mm x 185 mm x 46 mm)
Weight:	1lb (560 g)

Standards

All instruments conform to national and international standards: DIN EN ISO 2178, DIN 50982, ASTM B 499, E 376, D 1186, G 12, B 530, BS 5411, ISO 2361

Procedure

The measurement of the coating thickness is based on magnetic attraction. The attractive force is related to the distance between a permanent magnet and a steel substrate. This distance represents the thickness of the coating to be measured. The magnet is lifted from the surface by means of a spring connected to the magnet arm. The force needed to lift the magnet is directly related to the angle of rotation of the torsion spring. This measuring principle is also especially suited for electroplated nickel on copper, aluminium and other non-ferrous metals.

Manual Mikrotest - Turn the scale wheel to the forward stop and then slowly turn the wheel backwards by hand until the magnet releases from the object to be measured.

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