9- Technical Characteristics
9.1 Physical Characteristics
Compliant with IEC 61526 Ed. 3, ANSI 42.20 (*)
(*) Isotropy at
241
Am and
137
Cs with angle ± 75°
Measurement and display:
X-ray and gamma energy range: 15 keV to 7 MeV
Energy response better than ± 20% from 16 keV to 7 MeV
(typically ± 10%)
Accuracy Hp(10):
≤ ± 10% (16 keV)
≤ ± 10% (
241
Am)
≤ ± 5% (
137
Cs)
≤ ± 10% (
60
Co)
Display units: mSv, µSv, or mrem
Display dose: 1 µSv to 10 Sv (0.1 mrem to 1000 rem)
Display rate:
0.01 mSv/h to 10 Sv/h (1 mrem/h to 1000 rem/h)
or 0.001 mSv/h to 10 Sv/h (0.1 mrem/h to 1000 rem/h)
(extended option(**))
Measurement range:
1 µSv to 10 Sv (0.1 mrem to 1000 rem)
0.1 µSv/h to 20 Sv/h (0.01 mrem/h to 2000 rem/h)
Saturation indication : above 10 Sv (1000 rem)
or 10 Sv/h (1000 rem/h)
Dose rate linearity:
≤ ± 20 % up to 10 Sv/h (1000 rem/h) (Co and X H30 20 keV)
(**) - Mandatory if rate alarms are set below 50 µSv/h
(5 mrem/h) in order to display rate with better accuracy, if
fast response time for rate alarm is not required.
- Recommended for rate alarms settings below
100 µSv/h (10 mrem/h), if fast response time for rate alarm
is not required.
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