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Magnetic induction measurement

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Magnetic induction measurement

The magnetic induction measurement method according to ISO 2178 is an electro-magnetic method for measuring the thickness of magnetically-neutral coatings on magnetic base material.

It enables the non-destructive testing of coat thickness or material – for example galvanic coats of chromium, zinc, copper or aluminium on steel and iron. In addition, the test method is also used to measure paint and lacquer coats on steel and iron. How does the magnetic induction method work? The magnetic induction method is a contact measurement method. An exciter current generates a low-frequency magnetic field, the strength of which is dependent on the distance between the measuring probe and the base material - i.e. the thickness of the non-magnetisable coat. The resultant magnetic field is recorded via a measuring coil. The measurement signal received is then transformed into the precise coat thickness value in a special measuring device, via the probe characteristics – the functional interrelation between measurement signal and coat thickness.

Graphic visualisation of the magnetic inductive measurement method.

 

Glossary

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Overspray-Test
Corrosion protection
Curing
Curing in process
Conveyor belt oven (continuous oven)
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Chain conveyor oven
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Corrosion College
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Pressure water jetting test
Fertiliser resistance
Anodic dip coating (ADC)
Cathodic dip coating (CDC)

Technical terms can not always be avoided. As corrosion experts, we not only want to give you comprehensive advice, we are also interested in making you a corrosion expert yourself.

The variety around the topic of corrosion and corrosion protection is also in our glossary at home: explanations from A as in Adhesion to T as in Thread tolerance. Have fun clicking through!