Specification
AT110 | AT130 | |
Gamma radiation sources, maximum activity | 137Cs: 1.3·1012 Bq (35 Ci) | 137Cs: 9.6·1013 Bq (2600 Ci) 60Cо: 7.2·109 Bq (0.2 Ci) 241Am: 1.6·1010 Bq (0.4 Ci) |
Number of sources | up to 5 | up to 6 |
Air kerma rate | 0.25 µGy/h – 350 mGy/h | 0.36 µGy/h – 50 Gy/h |
Exposure dose rate | 30 µR/h – 40 R/h | 40 µR/h – 5400 R/h |
Ambient and personal dose equivalent rates | 0.30 µSv/h – 420 mSv/h | 0.43 µSv/h – 58 Sv/h |
Intrinsic relative error for certification as a working standard of 1-st category (2-nd category) | ±2.5% (±5%) for air kerma rate and exposure dose rate ±4.5% (±7%) for ambient and personal dose equivalent rates |
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Actual values of range limits and errors are determined by calibration |