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Model 907 Radiation Survey Meter Alpha, Beta, Gamma, & X-Ray |
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Specifications |
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Detector |
Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75" ( 45 mm ). Mica window density 1.5-2.0 mg/cm |
Display |
4-digit liquid crystal display with mode indicators |
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. |
Operating Range |
mR/hr: .001 to 100.0; CPM: 0 to 300,000; Total: 1 to 9,999,000 counts; mSv/hr: .01 to 1,000; CPS: 0 to 5,000 |
Efficiency |
Sr-90 ( 546 KeV, 2.3 MeV max): approx. 75 %; C-14 (156 KeV max ): approx. 11 %; Bi-210 ( 1.2 MeV max ): approx. 64 %; Am-241 ( 5.5 MeV ): approx. 36 % |
Sensitivity |
3500 CPM/mR/hr referenced to Cs-137 |
Accuracy |
± 15 % |
Timer |
Can set 1-10 minute sampling periods in 1-minute increments, 10-50 minute sampling periods in 10-minute increments, and 1-24 hour sampling periods in 1-hour increments |
Count Light |
Red LED flashes with each radiation event |
Audio |
Beeper beeps with each radiation event; can be muted |
Outputs |
Dual miniature jack drives CMOS or TTL devices, sending counts to computer or data logger. Submini jack allows for electronic calibration. |
Anti-Saturation |
Readout holds at full scale in fields up to 100 times the maximum reading |
Temp. Range |
-10° to +50 °C , 14° to 122 °F |
Power |
One 9-volt alkaline battery; battery life is minimum 200 hours at normal background, minimum 24 hours at 1 mR/hr |
Size |
150 x 80 x 30 mm ( 5.9"; x 3.2"; x 1.2" ) |
Weight |
350 grams ( 12.5 oz ) with battery |
Options |
P/N6941 palmGRAPH windows software for Model 907 P/N6947 Cable palmRAD-to-PC P/N6954 Wipetest Plate P/N7010-1 Water Resistant Kit P/N8000-SA3-907 3yr Service Agreement for 907 |