The other standards say how the measurement is made. EN 15317 says how the instrument used to make it is assessed.
- ✓ Reference edition: EN 15317:2013
- ✓ Methods and acceptance criteria for instrument performance
- ✓ Direct-reading instruments and waveform-display instruments
- ✓ Single crystal or dual element probes
EN 15317:2013 occupies a different place from the other standards in this section. It does not describe how to perform the measurement, but specifies «methods and acceptance criteria for assessing the performance of instruments for measuring thickness using pulse-echo ultrasound», that is, «methods and acceptance criteria for assessing the performance of instruments that measure thickness with pulse-echo ultrasound». The subject of the standard is therefore the equipment.
The scope covers both direct-reading instruments, that is, digital thickness gauges returning a figure, and those with waveform display, and considers them used with single crystal or dual element probes. It is broad coverage, matching what is actually encountered in industrial measurement campaigns.
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The standard can also serve to verify equipment covered by the EN 12668 series, in its parts 1, 2 and 3, devoted respectively to the instrument, to the transducers and to the combination of the two. This link is useful when the specification requires the characterisation of the whole measurement chain and not only of an isolated component.
What it covers
| Aspect | Confirmed content |
|---|---|
| Edition | EN 15317:2013 |
| Subject | Performance of instruments for thickness measurement |
| Content | Methods and acceptance criteria for the assessment |
| Instruments covered | Direct-reading (digital) and waveform-display |
| Probes | Single crystal or dual element |
Why it is worth distinguishing method from instrument
When a test report is challenged, the objection almost always concerns one of two planes: the way the measurement was performed, or the suitability of the instrument used. These are different questions and they are settled with different documents. The first is answered by citing the method standard; the second requires instead a reference on the performance of the instrument, and that is exactly the role of EN 15317.
In the practice of managing an instrument fleet this translates into two documents to be kept for every thickness gauge: the conformities declared by the manufacturer, stated on the individual model’s data sheet, and the calibration certificate in force. If you need to reconstruct this documentation for an audit, you can write to us.
Recommended instruments
| Item | Role in the verification |
|---|---|
| Calibration blocks | References of known thickness for checking the instrument |
| Dakota CMX10-DL | Instrument with waveform display |
| Dakota CX6-DL | Direct-reading instrument with data logger |
| DakMaster | Data management and reporting of measurement campaigns |
Frequently asked questions
Methods and acceptance criteria for assessing the performance of instruments that measure thickness with pulse-echo ultrasound.
Both direct-reading, that is digital, instruments and those with waveform display, used with single crystal or dual element probes.
It can be used to verify equipment covered by EN 12668-1, -2 and -3.
Back to Standards for thickness measurement or write to us from the Contact page.
Further information and contacts
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