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Non-destructive testing - Characteristics of focal spots in industrial X-ray systems - Part 3: Measurement of the effective focal spot size of mini and micro focus X-ray tubes
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STANDARD published on 1.6.2026
Designation standards: ČSN EN ISO 32543-3
Classification mark: 015013
Catalog number: 523560
Publication date standards: 1.6.2026
SKU: NS-1271303
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
This document specifies a method for the measurement of focal spot sizes within the range of 5 µm to 300 µm of X-ray systems up to and including 225 kV tube voltage. This determination is based on the evaluation of an image with a dedicated focal spot that has been radiographically recorded using an edge and evaluated with a digital method.
The imaging quality and the resolution of X-ray images depend highly on the characteristics of the effective focal spot, in particular its size and the two-dimensional intensity distribution as seen from the detector plane.
For the characterization of commercial X-ray tube types (i.e. for advertising or trade), the nominal values of Annex A are preferred.
NOTE - The same procedure can be used at higher kilovoltages by agreement but the accuracy of the measurement can be poorer
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Latest update: 2026-06-20 (Number of items: 2 283 412)
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