GAMMATECT PLUSTM SPECIFICATIONS
Gammatect PlusTM System Specifications
| Gammatect PlusTM sensors, integrated with Defentect architecture and connected to a server, create a ubiquitous grid of threat-level radiation protection. Gammatect PlusTM, networked to Defentect software, triggers alerts to incident command centers or mobile clients. Gammatect PlusTM is designed to avoid innocent positives caused by low level radiation from medical treatments or naturally occurring radiation. | ||
| Operating Indicated Use | Gamma Detection: 35keV-3.0MeV |
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| Isotope Energy Library | Onboard MCA for energy identification 99 isotopes can be defined |
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| Sensitivity | Typical 15 cps/µR/hr for Cs-137 | |
| Operating System | Windows XP | |
| Sampling Rate | 1 Millisecond | |
| Scintillation (Up to eight external) |
2 Inch Diameter x 2 Inch Thick NaI (TI) Crystal |
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| System Chassis | NEMA III rated security enclosure |
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| Power Requirements | 110 VAC / 500 Watts (220 VAC / 250 Watts) |
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| Dimensions | 16" H x 11" W x 8" D / 14 Lbs | |
| Energy Response | Energy Dependent | |
| Source Activity Ranges for Gammatect PlusTM | ||
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| Defentect has tested Gammatect PlusTM to determine effective ranges for radiological source detection. Tests are performed using Cesium-137 (137Cs) and extrapolations are made using the RAD PRO CALCULATOR program. Testing for alarm and isotope identification is based on a radiation dose rate field of 50 uR/hr* and above. Detection alone occurred below 50 uR/hr*. | ||
| ACTIVITY | DISTANCE | DOSE RATE |
| 0.10 Ci | 100 FT | 30.85 µR/hr |
| 80 FT | 49.3 µR/hr | |
| 0.50 Ci | 50 FT | 654.5 µR/hr |
| 100 FT | 154.2 µR/hr | |
| 168 FT | 50.0 µR/hr | |
| 200 FT | 34.3 µR/hr | |
| 1.0 Ci | 500 FT | 7.7 µR/hr |
| 230 FT | 50.0 µR/hr | |
| 100 FT | 308.5 µR/hr | |
| 50 FT | 1,309 µR/hr | |
| 5.0 Ci | 500 FT | 38.7 µR/hr |
| 450 FT | 50.6 µR/hr | |
| 100 FT | 1,542 µR/hr | |
| 10.0 Ci | 700 FT | 31.3 µR/hr |
| 590 FT | 50.1 µR/hr | |
| 374.8 Ci | 1800 FT | 50 µR/hr |
| 721.0 Ci | 2100 FT | 50 µR/hr |
System tested with 0.070 Ci (70 mCi) 137-Cs at 100 ft w/o shielding. Estimated dose rate approx. 21 µR/hr consistently triggered alarm at 100% each time source was opened and aimed at GTP system. *50 µR/hr = (0.050 mRem/hr) is used to verify 100% isotope identification of unknown sources. |
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