ET-28 

CRACK DEPTH METER 

A high-precision, hand-held instrument explicitly designed for measuring the

depth of cracks on various metals and alloys, including stainless steel and

duralumin, which have been previously detected by other methods.

• Operates on the principle of AC electro-potential measurement, providing prompt and precise depth testing compared to traditional methods. It works most efficiently in combination with other crack-revealing methods, such as magnetic particle, capillary, or eddy-current testing.

• Suitable for measurement on both ferromagnetic and non-ferromagnetic materials (e.g., stainless steel, aluminum alloys).

• Wide measuring range from 0.2 to 100.0 mm.

• Minimal influence of material electromagnetic properties on measurement results.

• Equipped with various probe designs for inspecting products of irregular shapes.

• Mobile spring-loaded contact electrodes on the probe enable measurements on curved surfaces.

Application

• Shafts, rolls, rolling mills, construction components, machines, and mechanisms

• Pipes, tubes, oil-and-gas pipelines

• Pressure vessels

• Energy industry devices

Stages of crack depth measuring

• Setting of the “0” – measure on an undamaged area of the object.

• Measuring of crack depth – position the contact electrodes on opposite sides of the crack, and the depth measurement in mm will be displayed on the screen.

Requirements for control objects

• Surface roughness of 40 Rz (10 Ra) or less.

• Stable electrical contact with the probe electrodes.

Delivery set

• Electronic unit with accumulator

• Probe “1×4”

• Test block with 1 crack

• Charger

• Carrying and storage bag