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EN 462-1 Image Quality Indicators (I.Q.I’s) - Penetrameters,
RADIOGRAPHY Accessories
EN 462-1 Wire Type were introduced as a EUROPEAN STANDARD to supersede the
German Standards
(DIN 54.109) and the British Standards Institute (BS3971:1980 type 1) Image Quality
Indicators. Each
indicator consists of a series of seven parallel wires of different thichkness mounted and
encapsulated
between two thin sheets of transparent, flexible PVC. A lead monogram indicates the
number of the thickest wire, the material and the EN symbol.
Wire Diameters:
| Wire Number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Wire Diam(mm) | 3.20 | 2.50 | 2.00 | 1.60 | 1.25 | 1.00 | 0.80 | 0.63 | 0.50 | 0.40 |
| Wire Number | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
| Wire Diam(mm) | 0.32 | 0.25 | 0.20 | 0.16 | 0.125 | 0.10 | 0.08 | 0.063 | 0.05 |
Indicator Sizes:
There are four sizes of EN Image Quality Indicators.
Size 1 – contains wire numbers 1 to 7 and used for material thicknesses in
the range of 40 t 160mm
Size 6 – contains wire numbers 6 to 12 and used for material thicknesses in
the range of 12.5 to 50mm
Size 10 – contains wire numbers 10 to 16 and used for material thicknesses
in the range of 5 to 20mm
Size 13 – contains wire numbers 13 to 19 and used for material thicknesses
in the range 2.5 to 10mm
All sizes are available in Steel(Fe), Aluminium(Al), and Stainless Steel(SS). Copper(Cu),
Zirconium(ZR) Image Quality Indicators are only available in sizes 6 and 10. Nickel(Ni)
Image Quality Indicators are only available in sizes 6, 10 and 13.
As an illustration the identification (i.e. lead monogram) for, say Size 10 (Wire numbers 10
to 16) in steel(Fe) would be 10 FE EN.