PTW NORMI 13 - Technical Manual; 5 Technical Specifications

NORMI 13 (T42023)
Technical Manual - Technical Specifications
D703.131.00/03 en 33
Technical Manual
5 Technical Specifications
Only values with specified tolerances or limits are guaranteed. Values without tolerances are for informa-
tional purposes only.
5.1 NORMI 13
Device designation NORMI 13 (T42023)
Manufacturer PTW-Freiburg
Application test object for constancy tests of digital projection radiography sys-
tems according to DIN 6868-13
Structures – dynamic steps:
7 steps with heigths of
0 mm; 0.30 mm; 0.65 mm; 1.00 mm; 1.40 mm; 1.85 mm, 2.30 mm
– radiation-absorbing line marks for light field adjustment
– X-ray test pattern for spatial resolution
– low contrast objects for contrast resolution
– free area for signal normalization
– area for dose measurement, marks not radiopaque
– crosshairs for central alignment, marks not radiopaque
Material – PMMA plate, 8 mm thick
– grid plate, 0.5 mm thick
– copper plate, 1 mm thick
– front foil, 0.5 mm thick
Dimensions test object: 300 mm x 300 mm x 10 mm
PMMA absorber: 300 mm x 300 mm x 30 mm
aluminum absorber: 163 mm x 163 mm x 25 mm
Weight (test object only) approx. 2.0 kg