Overview
Enviro Testers Multi-Function Geiger Meter can be used to detect alpha, beta, gamma, and X-rays, and the built-in 2 in (50.8 mm) flat GM detector is highly sensitive to alpha and beta sources. The digital display can be selected in different units such as mR or hr, CPM, CPS or mSv or hr as required. The detector automatically compensates for the dead time of the GM tube, and the anti-saturation circuit prevents interference in the strong radiation field.
Features
- The digit display can be selected in different units such as mR/hr, CPM, CPS
- The detector automatically compensates the dead time of the GM tube
- The anti-saturation circuit prevents interference in the strong radiation field
Technical Specifications
| Probe | Halogen quencher GM tube, effective diameter 45 mm, mica window density 1.5 mg /c m3 to 2.0 mg /c m3 |
| Display | The four-digit value is displayed by the LCD screen, and the counting lamp is a red LED lamp |
| Average Period | The value is updated every 3 s and the average value in the last 30 s is displayed. If the radiation intensity is increased, the average period of 30 seconds will be shortened. The user can select the minimum average period 3 s |
| Operating Range | 0.001 mR / hr to 100.0 mR / hr, 0 CPM to 300,000 CPM, counting a total 1 to 9,999,000, 0.01 μSv / hr to 1,000 μSv / hr, 0 CPS to 5,000 CPS |
| Efficiency | The efficiency of Sr-90 (546 keV and 2.3 MeVβ) is about 38 %, The efficiency of C-14 (average 49 Kev, 156 keV βmax) is about 5.3 %, Bi-210 (390 keV mean, 1.2 MeV βmax) has an efficiency of about 32%, Am-241 (5.5 MeVα) has an efficiency of about 18 %, |
| Time Meter | Can be set to receive radiation time 1 to 10min, unit increment of 1min, Or 10 to 50 min, unit increment 10min, Or 1 to 24 hr in increments of 1 hr |
| Power Supply | 19 V alkaline battery, 200 h in natural battery, at least 24 hrs at 1 mR / hr dose rate |
| Output | Dual micro jacks drive CMOS or TTL programs, data can be downloaded to the computer. Microjacks allow electronic checking. |
| Anti-saturation | The reader can display up to 100 maximum readings on a full scale in the field |
| Spirit Sensitivity | 3500 CPM / mR / hr, for 137 Cs standard sources |
| Precision | ±15 % |
| Ambient Temperature | 28 °F to 122 °F (-20 °C to +50 °C) |
| Volume | 5.906 in x 3.150 in x 1.181 in (150 mm × 80 mm × 30 mm) |
| Weight | 12.34 oz (350 g) battery |
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