British Standards Institution

Source:: ISO
Committee:: WEE/46 - Non-destructive testing
Categories:: Information management | Standardization. General rules

Scope

This document specifies a method for the measurement of effective focal spot dimensions above 0,1 mm of X-ray systems up to and including 1000 kV tube voltage by means of the pinhole camera method with digital evaluation. The tube voltage applied for this measurement is restricted to 200 kV for visual film evaluation and can be selected higher than 200 kV if digital detectors are used.
The imaging quality and the resolution of X-ray images depend highly on the characteristics of the effective focal spot, in particular the size and the two-dimensional intensity distribution as seen from the detector plane. Compared to the other methods specified in EN 12543 series respective ISO 32543 series, this method allows to obtain an image of the focal spot and to see the state of it (e.g. cratering of the anode).
This test method provides instructions for determining the effective size (dimensions) of standard (macro focal spots) and mini focalspots of industrial X-ray tubes. This determination is based on the measurement of an image of a focal spot that has been radiographically recorded with a “pinhole” technique and evaluated with a digital method.
For the characterization of commercial X-ray tube types (i.e. for advertising or trade), the specific FS (Focal spot) values of Annex A
can be used.

Purpose

REPLACE : EN 12543-2 :2021 due to its adoption at ISO level as ISO 32543-1 Original document have been EN 12543-2 : 2021, this was adopted by ISO but the number needed to be changed, so it became ISO 32543-1.

Harmonization of ISO and EN standard is required.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal

Proposal start date:

11/03/2024

Proposal end date:

22/04/2024

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

NWI - ISO 32543-1 as EN ISO standard to supersed EN 12543-2

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