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Fluke 481 漏射線檢測儀
| General specifications | |
| Radiation detected | Beta > 100 keV Gamma > 7 keV |
| Operating ranges | 0 mR/h to 5 mR/h (8 sec) 0 mR/h to 50 mR/h (2.5 sec) 0 mR/h to 500 mR/h (2 sec) 0 R/h to 5 R/h (2 sec) 0 R/h to 50 R/h (2 sec) |
| Accuracy | Within 10 % of readings between 10 % and 100 % of full scale indication on any range, exclusive of energy response |
| Detector | Chamber (cc volume air ionization) 349 cc Chamber wall (phenolic) 246 mg/cm2 Chamber window (mylar) 6.6 mg/cm2 Beta slide 440 mg/cm2 |
| Automatic features | Auto-zeroing, auto-ranging, and auto-backlight |
| Power requirements | Two 9 V alkaline, 200 hours operation |
| Warm-up time | One minute |
| Battery life | Four+ hours continuous use per battery pack (assumes 50 % brightness of LCD) |
| Dimensions (W x D x H) | 10 cm x 20 cm x 15 cm (4 in x 8 in x 6 in) |
| Weight | 1.11 kg (2.5 lb) |