Coating Thickness Gauge

Features

● High quality metal probes.

● Two measuring methods: continuous and single.

● Two working mode: direct and batch.

● Limit setting function.

● Switch off automatically or manually.

● Dry film thickness measurement.

20A6559

Measuring Materials

Magnetic Induction (Fe): Measuring the thickness of Non-magnetic coating on magnetic metal substrate, such as aluminum, chromium, copper, zinc, rubber, paint on the base of steel, iron, alloy and magnetic steel.

Eddy Current (NFe): Measuring the thickness of Non-conductive coating on non-magnetic metal substrate, such as rubber, plastic, paint, oxide on the base of aluminum, copper, zinc, tin.

20A6554

Technical Specification

Model	Leeb 250A	Leeb 251A	Leeb 252A
Measuring principle	Fe	NFe	Fe or NFe
Measuring Range	0~1250μm
Probe	Settled		Changeable
Shell	Plastic
Accuracy	±[(1~3%)H+1] μm H refers to the thickness of testing piece
Minimum resolution (µm)	0.1μm
Min curvature of the min area (mm)	Convex 1.5 Concave 9
Diameter of the min area (mm)	Φ7
Critical thickness of substrate (mm)	0.5
Memory	200 groups measured data
Dimensions	115×55×23mm
Power supply	AAA Alkaline battery
Standard Configuration	Main Machine, 5 calibration specimens (48.5m, 99.8m, 249m, 513m, 1024m), 1 probe & substrate, 1 leather sheath
Optional Accessories	Probes, Specimens

Measuring Conditions

a) The characteristics of substrate

Standard methods for magnetic substrate of magnetic properties and surface roughness should be similar to the magnetic properties and surface roughness of specimens substrate.

For eddy current method, the standard substrate of electrical properties should be similar to the electrical properties of specimens substrate.

b) The thickness of substrate

Check whether the thickness of the substrate is lower than the minimum thickness, if not, can use one of method in 3.3 to calibrate.

c) Edge effect

Should not be in the specimen shape changing places, such as edges, holes, and the place such as Angle measurement.

d) The curvature

Should not be in curved surface measurement of the specimens.

e) Measurement and measured times

Usually as a result of the instrument measurement result is not the same each time, so we must in every area from several measurement results.Coating thickness and surface rough degree of local differences, require at any repeated measurements in a specific area.

f) Surface cleanliness

Before measurement, should remove any attached on the surface of a material, such as dust, grease and corrosion products, but do not remove any covering material.