Description
Overview
GAOTek geiger counter radiation detector can be used to detect alpha, beta, gamma, and X-rays, and the built-in 2-in flat GM detector is highly sensitive to alpha and beta sources. The digital display can be selected in different units such as mR/hr, CPM, CPS or mSv /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. The detector complies with European CE certification, RoHS standard and WEEE standard. The detector can accurately detect minor contamination, can take a timed reading, the time setting can be from 1 to 40 hours, and when the radiation level reaches the value set by the user, the alarm sounds. Â
Technical Specifications
| Probe | Halogen quencher GM tube, effective diameter 1.8 in (45 mm) |
| 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 seconds and the average value in the last 30 seconds 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 seconds |
| Operation range | 0.001 mR/hr to 100.0 mR/hr, 0 CPM to 300,000 CPM, counting 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 10 minutes, unit increment of 1 min or 10 to 50 minutes, unit increment 10 minutes, Or 1 to 24 hours in increments of 1 hour |
| Power supply | 19 V alkaline battery, 200 hours in natural battery, at least 24 hours at 1 mR/hr dose rate |
| Output | Dual micro-Jacks drive CMOS or TTL programs, data can be downloaded to the computer. Micro jacks allow electronic checking. |
| Anti-saturation | The reader can display up to 100 maximum readings on a full scale in the field |
| Alarm threshold | Adjustable according to user needs |
| Sound | There is a corresponding sound prompt, can be set to mute |
| Spirit sensitivity | 3500 CPM/mR/hr, for 137 Cs Standard sources |
| Precision | ±15% |
| Ambient temperature | From -4 ℉ to +122 ℉ (-20 ℃ to +50 ℃) |
| Volume weight | 5.9in × 3.1 in × 1.2 in (150 mm × 80 mm × 30 mm), 0.8 lbs (0.4 kg) battery |