RTI Piranha, Reference Manual, Page: 24 / 181

2. Description of the Piranha
Hardware and Specifications
Piranha & QABrowser Reference Manual 2014-06/5.5C
20
Parameter Range
Dose/pulse
with wide range option (WR)
2.5 µGy/pulse - 60 kGy/pulse
1
8 nGy/pulse - 60 kGy/pulse
1
Pulse dose rate
with wide range option (WR)
Lower limit 10 µGy/s (70 mR/min), otherwise same as
for air kerma rate.
Lower limit 10 µGy/s (70 mR/min) otherwise, same as
for air kerma rate.
Min. output peak dose rate
- High Sensitivity
- Low Sensitivity
dose rate (min. pulse width)
4 µGy/s (4 ms) / 30 µGy/s (0.5 ms)
20 µGy/s (4 ms) / 160 µGy/s (0.5 ms)
Pulse rate 0.5 – 180 Hz, resolution 0.5 Hz
Pulse width
4 ms - 2000 s
Duty cycle 5 - 95 %
Minimum pulse width
- High Sensitivity
- Low Sensitivity
pulse width (min. dose rate)
4 ms (4 µGy/s) / 0.5 ms (30 µGy/s)
4 ms (20 µGy/s) / 0.5 ms (160 µGy/s)
Minimum ripple
(pulse top to bottom)
50 %
Irradiation time
1 – 65535 pulses, resolution 1 pulse
Note 1 : Max dose/pulse depends on the pulse length.
Note 2 : All kerma and kerma rate ranges, inaccuracy, and resolution figures are valid for product
version 2 and higher of the Piranha.
Waveform recording time
At max sampling rate
1024 ms (2 kSa/s)
At min sampling rate 524 s (4 Sa/s)
A total of 8 recording times are available, all separated by a factor of 2, i.e. 1, 2, 4, 8,
16, 33, 66, 131, 262 and 524 seconds.
The setting for Waveform recording time may affect the Irradiation time
calculation. Make sure to set back the Waveform recording time to the
lowest choice after temporarily modifying it. Please also note that in
QABrowser, the waveforms are limited to between 0.32 and 4 seconds.