Thermo Interceptor - Page 133

Appendix B
Specifications
Gamma dose rate (DR) measurement specifications
Number of Detectors 2
Material Cadmium-Zinc-Telluride
Dimensions (15 × 13 × 5) mm,
(0.59 × 0.51 × 0.2)" each
Sensitivity (
137
Cs) 1.5 cps per µR/h
Dose Rate Range Response 5µR/h – 100mR/h (±30% with
137
Cs)
Overload Condition Count Rate 150 kcps
Energy Range 60keV–3MeV
Alarm levels 3 preset levels, user adjustable
Default alarm level Background: 6 σ
Warn: 400 µR/h
Alarm: 4000 µR/h
Gamma identification detector (ID)
Number of Detectors 1
Material Cadmium-Zinc-Telluride
Dimensions (7 × 7 × 3.5) mm
(0.28 × 0.28 × 0.14)"
Energy Range 30keV – 1.5MeV
Energy Resolution (
137
Cs) 2.4% – 3.5% FWHM, CZT crystal
quality dependant
to be continued. . .
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