SFS-EN ISO 2178:en

Soveltamisala

Suomenkielistä soveltamisalaa ei ole saatavissa.

ISO 2178:2016 specifies a method for non-destructive measurements of the thickness of non-magnetizable coatings on magnetizable base metals.
The measurements are tactile and non-destructive on typical coatings. The probe or an instrument with integrated probe is placed directly on the coating to be measured. The coating thickness is displayed on the instrument.
In ISO 2178:2016 the term "coating" is used for material such as, for example, paints and varnishes, electroplated coatings, enamel coatings, plastic coatings, powder coatings, claddings.
NOTE This method can also be applied to the measurement of magnetizable coatings on non-magnetizable base metals or other materials (see ISO 2361).

Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).

Sisällysluettelo

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of measurement

4.1 Basic principle of all magnetic measurement methods
4.2 Magnetic pull-off method
4.3 Magnetic inductive principle
4.4 Magnetic flux gauge

5 Factors affecting measurement accuracy

5.1 Basic influence of the coating thickness
5.2 Magnetic properties of the base metal
5.3 Electrical properties of the coating materials
5.4 Geometry: base metal thickness
5.5 Edge effect
5.6 Geometry: surface curvature
5.7 Surface roughness
5.8 Cleanliness: lift-off effect
5.9 Probe pressure
5.10 Probe tilt
5.11 Temperature effects
5.12 External electromagnetic fields

6 Calibration and adjustment of the instrument

6.1 General
6.2 Thickness reference standards
6.3 Methods of adjustment

7 Measurement procedure and evaluation

7.1 General
7.2 Number of measurements and evaluation

8 Uncertainty of the results

8.1 General remarks
8.2 Uncertainty of the calibration of the instrument
8.3 Stochastic errors
8.4 Uncertainties caused by factors summarized in Clause 5
8.5 Combined uncertainty, expanded uncertainty and final result

9 Precision

9.1 General
9.2 Repeatability (r)
9.3 Reproducibility limit (R)

10 Test report

Annex A Basic principle of all measurement methods (informative)
Annex B Basic performance requirements for coating thickness gauges which are based on the magnetic method described in this International Standard (informative)
Annex C Examples of experimental estimation of factors affecting the measurement (informative)
Annex D Example of uncertainty estimation (see Clause 8) (informative)
Annex E Basics of the determination of the uncertainty of a measurement of the used measurement method corresponding to ISO/IEC Guide 98-3 (informative)
Annex F Table of the student factor (informative)
Annex G Details on precision (informative)

Bibliography

Näytä kaikki

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of measurement

4.1 Basic principle of all magnetic measurement methods
4.2 Magnetic pull-off method
4.3 Magnetic inductive principle
4.4 Magnetic flux gauge

5 Factors affecting measurement accuracy

5.1 Basic influence of the coating thickness
5.2 Magnetic properties of the base metal
5.3 Electrical properties of the coating materials
5.4 Geometry: base metal thickness
5.5 Edge effect
5.6 Geometry: surface curvature
5.7 Surface roughness
5.8 Cleanliness: lift-off effect
5.9 Probe pressure
5.10 Probe tilt
5.11 Temperature effects
5.12 External electromagnetic fields

6 Calibration and adjustment of the instrument

6.1 General
6.2 Thickness reference standards
6.3 Methods of adjustment

7 Measurement procedure and evaluation

7.1 General
7.2 Number of measurements and evaluation

8 Uncertainty of the results

8.1 General remarks
8.2 Uncertainty of the calibration of the instrument
8.3 Stochastic errors
8.4 Uncertainties caused by factors summarized in Clause 5
8.5 Combined uncertainty, expanded uncertainty and final result

9 Precision

9.1 General
9.2 Repeatability (r)
9.3 Reproducibility limit (R)

10 Test report

Annex A Basic principle of all measurement methods (informative)
Annex B Basic performance requirements for coating thickness gauges which are based on the magnetic method described in this International Standard (informative)
Annex C Examples of experimental estimation of factors affecting the measurement (informative)
Annex D Example of uncertainty estimation (see Clause 8) (informative)
Annex E Basics of the determination of the uncertainty of a measurement of the used measurement method corresponding to ISO/IEC Guide 98-3 (informative)
Annex F Table of the student factor (informative)
Annex G Details on precision (informative)

Bibliography

Tuoteryhmä(t)

17.040.20 Pintojen ominaisuudet »
25.220.40 Metalliset pinnoitteet »
25.220.50 Emalit »

Sidokset

Velvoittavat viittaukset

ISO 2064:1996 Metallic and other inorganic coatings -- Definitions and conventions concerning the measurement of thickness
ISO 4618:2014 Paints and varnishes -- Terms and definitions
ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results -- Part 1: General principles and definitions

Tekninen komitea

CEN/TC 262 Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys »

Vahvistuspäivä

15.04.2016

Julkaisupäivä

19.04.2016

Painos

2

Sivumäärä

39

Julkaisun kieli

englanti