A Preface
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The procedures used to develop this document as well as those used for further maintenance are described in Part 1 of the ISO/IEC Directive. In particular, attention should be paid to the different approval criteria required for different types of ISO documents. This document is according to ISO/IEC directives part 2 edit rules drafted (see iso.org/directives).

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The committee responsible for this document is ISO/TC 107, Metals and other inorganic Coatings.

The third edition cancels and replaces the technically revised second edition (ISO 2178:1982).

ISO 2178-2016 “Magnetic method for measuring the thickness of non-magnetic coatings on magnetic substrates”

1 Scope
This standard specifies a of magnetization on the base metal is magnetized method for nondestructive measurement of coating thickness.

In a typical coating, and non-destructive measurement is touch. The probe or instrument with an integrated probe is placed directly on the coating to be tested. The coating thickness is displayed on the instrument.

In this standard, the term “paint” for such as paint and varnish, plating coating, enamel, paint, plastic paint, powder coating, coating materials, etc.

Note that this method can also be used to measure magnetic base metal or other materials on the magnetizable coating (see ISO 2361).

2 Normative references
All or some of the following documents are referenced normatively in this document. For dated references, only the cited version applies. For undated references, the new version of the reference (including any revisions) applies.

ISO 2064, Metallic and other inorganic coatings – Definitions and practices relating to thickness measurement

ISO 4618, 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

ISO/IEC Guide 98-3, Uncertainty in measurement – Part 3: Guide for the representation of uncertainty in measurement (GUM: 1995)

ISO 2178-2016 “Magnetic method for measuring the thickness of non-magnetic coatings on magnetic substrates”

3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2064 and ISO 4618 and the following shall apply.

3.1 Adjustment of the measurement system
A set of operations performed on a measuring system so that it provides a prescribed indication corresponding to a given value of the quantity to be measured

Note 1: the adjustment of the measuring system can include a zero point adjustment, migration and range adjustment (sometimes called gain adjustment).

Note 2: Adjustment of a measurement system should not be confused with calibration, which is a prerequisite for adjustment.

Note 3: After adjusting the measuring system, it should usually be recalibed-calibrated.

Note 4: in popular culture, the term “calibration” is often mistakenly used, rather than the term “adjust”. Similarly, the terms “verification” and “inspection” are often used in place of the correct term “calibration”.

[Source: ISO/IEC Guide 99:2007, 3.11 (also known as “VIM”), modified – entry note 4 has been added.

ISO 2178-2016 “Magnetic method for measuring the thickness of non-magnetic coatings on magnetic substrates”

3.2 Calibration
Under the specified conditions, the first step, the measurement uncertainty in measurement standards provide the number of values and the related measurement uncertainty of corresponding instructions to establish relations between operation, and in the second step USES this information to establish relations to get instructions from the measured results

Note 1: Calibration can be expressed in terms of sentences, calibration functions, calibration graphs, calibration curves or calibration tables. In some cases, it may include an additive or multiplicative correction for an indication with associated measurement uncertainty.

Note 2: Calibration should not be confused with the adjustment of the measurement system (often erroneously referred to as “self-calibration”), nor with calibration verification.

Remark 3: Typically, the first step in the above definition is itself considered calibration.

[Source: ISO/IEC Guide 99:2007, 2.39 (also known as “VIM”)]

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