User Manual

Table Of Contents
145
2900H EN 20071108 Advanced operation (Key-operator mode)
DRYSTAR 5500/5503 REFERENCE MANUAL
9 Record the respective aim (average) values as the ‘Operating levels’ on Charts
2a and 2b (‘Drystar 5500/5503 Daily Density Control Chart’). Refer to ‘Charts
for general radiography QC on page 242.
The calculated ‘Operating levels’ should be as follows:
10 These charts will be used for the daily quality test. For more information, refer
to ‘Performing the daily QC test for general radiography applications (DT 2 B and
DT 2 C)’ on page 149.
Operating Level
Value (Macbeth units)
(according IEC 1223-2-4 or better)
Low density 0.4 ± 0.05
Mid density 1.2 ± 0.15
High density 2.0 ± 0.20