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Your guide to coating thickness measurement

by Hans F. Nix, Cologne

PHYNIX has now completely updated its "Guide to Coating Thickness Measurement" as well as extending the range of information by a few chapters. By doing this, the user has, once again, a unique and up-to-date guide for the field of non-destructive coating thickness measurement using the magnetic-inductive and eddy current methods. Based on wide ranging experience, the gauges applied for both these methods are mostly used for the measurement of paint coatings and galvanized coverings.

This guide is designed for the practitioner and gives important information about measurement as well as practical advice which can be immediately applied and which contributes to a deeper understanding of the measurement procedure. The information presented here is of general use and goes far beyond any description you may find in an operating manual.

An extensive range of random words in the index takes you directly to the corresponding chapter of interest, containing practical solution suggestions. Whether it be respective standards, measurement on rough surfaces or calculation of the measurement error, you will find an answer to all important questions thus helping you further.

This guide can be obtained from PHYNIX GmbH & Co. KG.

Please order by e-mail.

 

Abridgement from the index of contents:


Coating Thickness Measurement - the basics

  1. What units do we use for coating thickness measurement?
  2. Which combinations of coating and substrate can be measured with the magnetic and eddy-current principles?
  3. How is the probe constructed and how does it work?
  4. What must I remember when using the probe?


Calibration - the basics

  1. Why and when must a coating thickness gauge be calibrated?
  2. What does a coating thickness gauge show when it is not calibrated / not correctly calibrated?
  3. Which applications are suitable for the three types of calibration of the Surfix® gauge?
  4. What does drift compensation mean in coating thickness measurement?


Special cases

  1. How does the geometry of the test sample influence test results?
  2. How can (too) small test samples appear larger by artifical means?
  3. When there is a multi-layer system (paint on paint on paint), how can I measure the top layer only?
  4. With a multi-layer coating system, how can I measure individual layers of paint on zinc on steel non-destructively?
  5. Rough substrates - problems and remedies.
  6. What should I remember when measuring unusual coatings?
  7. What effects does the electrical conductivity of the substrate (non-ferrous metal) have on test results?
  8. What effect does the low magnetizability of steel have on test results?
  9. What are the limits of the automatic substrate recognition 'AUTO FN'?
  10. What are the effects on measurement of magnetic and electromagnetic noise fields?


Processing measured values 

  1. What is the difference between resolution, repeatability and measuring uncertainty?
  2. What are the effects of the probe characteristic?
  3. How accurately can coating thickness be measured?
  4. What kinds of memory do Surfix® gauges have?
  5. What are the possibilities when measuring with set limits?
  6. How can test data be transferred to peripheral equipment?

 

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