| 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 (546KeV, 2.3MeV
max): approx. 75%; C-14 (156KeV
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 |
| Temperature 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: |
Wipe Test Plate |
