Measuring method
· Ionisation stream with semiconductor
Application range
· Total filtering according to DIN EN 61267 and IEC 1267
· 22kV (MV25)-35kV (MV35) without additional filters
· 22kV (MH25)-35kV (MH35) with 2,5mm Al
· 40kV (RQA 3)-160kV (RQA 10) behind phantom (25mm Al)
· 40kV (RQR 3)-160kV (RQR 10) attenuated radiation beam (2,5mm Al)
Dose rate
· Effective range
- 0,001 μGy/s – 1 Gy/s (resolution 0,1 ms)
· Dose rate
- automatically averaged over 1 second
· Display range
- 0,001 μGy/s – 9999 Gy/s
Dose
· Effective range
- 0,005 μGy – 999 Gy (resolution 0,001nGy)
· Display range
- 0,001 μGy – 9999 Gy
· Alignment
- vertically to detector surface
· Mode
- automatic responsivity adjustment over entire
effective range
Influence of scattered radiation
Due to the detector’s brass shielding scattered radiation has only fractional,
if any, influence on results (Errors <2% with dose measurement!).
Tube voltage
· Effective range
- 22-35 kV (mammography) and
- 40-160 kV (radiography)
· Accessories
- 0,5 mm Al additional filtering for voltage measurements
on dental x-ray equipment with tube (@ 2mm Al cumulative filtering)
Exposure time
· Effective range
- 0,6 ms – 50s (resolution 0,1ms)
· Display range
- 0,1ms – 50s
· Error rate
- <10% (from 1,0ms) <2% (from 5,0ms)
· Mode
- Stop watch (default configuration 20s)
Parameters
Installed Firmware Version (0.4) displayed with every switch-on and Reset
⇨ [dFO.4]
· Temperature range (default)
- +15°C – +40°C
· Relative humidness (default)
- 20% - 75%, 20g/m3