RTI Barracuda - 2.8 Maintenance; 2.8.1 Barracuda Batteries

2. Description of the Barracuda
Hardware and Specifications
Barracuda & QABrowser Reference Manual
2012-10/4.3A
40
- Generic 60 cm³, Ionization chamber (typical sensitivity 2 µC/Gy)
Module type
Range
Inaccuracy
EMM-Bias/BiasB
Air kerma
Air kerma rate
25 nGy – 14 kGy
1 µGy/s – 4 Gy/s
±5 %
±5 % or ±0.1 µGy/s (for time > 20 ms)
EMM-BiasW
Air kerma
Air kerma rate
2.5 nGy – 14 kGy
0.1 µGy/s – 4 Gy/s
0.5 mR/min – 25 kR/min
±5 %
±5 % or ±10 nGy/s (for time > 20 ms)
±5 % or ±70 nR/min (for time > 20 ms)
- Generic 150 cm³, Ionization chamber (typical sensitivity 5 µC/Gy)
Module type
Range
Inaccuracy
EMM-Bias/BiasB
Air kerma
Air kerma rate
10 nGy – 5.6 kGy
0.4 µGy/s – 1.6 Gy/s
±5 %
±5 % or ±40 nGy/s (for time > 20 ms)
EMM-BiasW
Air kerma
Air kerma rate
1 nGy – 5.6 kGy
40 nGy/s – 1.6 Gy/s
0.2 mR/min – 10 kR/min
±5 %
±5 % or ±4 nGy/s (for time > 20 ms)
±5 % or ±30 nR/min (for time > 20 ms)
- Generic 300 cm³, Ionization chamber (typical sensitivity 10 µC/Gy)
Module type
Range
Inaccuracy
EMM-Bias/BiasB
Air kerma
Air kerma rate
5 nGy – 2.8 kGy
0.2 µGy/s – 0.80 Gy/s
±5 %
±5 % or ±20 nGy/s (for time > 20 ms)
EMM-BiasW
Air kerma
Air kerma rate
0.50 nGy – 2.80 kGy
20 nGy/s – 0.8 Gy/s
0.1 mR/min – 5 kR/min
±5 %
±5 % or ±2 nGy/s (for time > 20 ms)
±5 % or ±14 nR/min (for time > 20 ms)
Below you can see a graph showing the typical measurement ranges for ion chambers
with different volumes together with the electrometer EMM-BiasW.