Valuable tips and how to deal with special cases in practical use
Specialities with the coating thickness measurement gauges of the Surfix®-models
PHYNIX GmbH & Co.KG Köln
Germany
2001
Abridgement from the index of contents:
Coating Thickness Measurement - the basics
- What units do we use for coating thickness measurement?
- Which combinations of coating and substrate can be measured with the magnetic and eddy-current principles?
- How is the probe constructed and how does it work?
- What must I remember when using the probe?
Calibration - the basics
- Why and when must a coating thickness gauge be calibrated?
- What does a coating thickness gauge show when it is not calibrated / not correctly calibrated?
- Which applications are suitable for the three types of calibration of the Surfix® gauge?
- What does drift compensation mean in coating thickness measurement?
Special cases
- How does the geometry of the test sample influence test results?
- How can (too) small test samples appear larger by artifical means?
- When there is a multi-layer system (paint on paint on paint), how can I measure the top layer only?
- With a multi-layer coating system, how can I measure individual layers of paint on zinc on steel non-destructively?
- Rough substrates - problems and remedies.
- What should I remember when measuring unusual coatings?
- What effects does the electrical conductivity of the substrate (non-ferrous metal) have on test results?
- What effect does the low magnetizability of steel have on test results?
- What are the limits of the automatic substrate recognition 'AUTO FN'?
- What are the effects on measurement of magnetic and electromagnetic noise fields?
Processing measured values
- What is the difference between resolution, repeatability and measuring uncertainty?
- What are the effects of the probe characteristic?
- How accurately can coating thickness be measured?
- What kinds of memory do Surfix® gauges have?
- What are the possibilities when measuring with set limits?
- How can test data be transferred to peripheral equipment?
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