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Detector |
Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75\" (45 mm). Mica window density 1.5-2.0 mg/cm2 |
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Display |
4-digit liquid crystal display with mode indicators |
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Averaging Periods |
Display updates every 3 seconds, showing the average for the past 30-second time period at normal levels. The averaging period decreases as the radiation level increases. User can select fast 3-second averaging period.
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|
Operating Range |
mR/hr : 0.001 ~ 100.0;
CPM : 0 ~ 300,000; Total: 1 to 9,999,000 counts;
mSv/hr : 0.01 ~ 1,000; CPS: 0 ~5,000 |
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Efficiency |
Sr-90 (546KeV, 2.3MeV b max): approx. 75%;
C-14 (156KeV b max): approx. 11%;
Bi-210 (1.2 MeV b max): approx. 4%;
Am-241 (5.5 MeV a): approx. 36%
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|
Sensitivity |
3500 CPM/mR/hr referenced to Cs-137 |
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Power supply |
500-volt, in the probe head |
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Size |
Approx. length: 22.2 cm (8.75 in.) Diameter: 7 cm (2.75 in.) |
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