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DGA-C
DGA-C是增强型聚焦伽马传感器，是上一代DGA的增强型版本，采用更大的晶体，探测灵敏度提升50%以上，大大提高在复杂环境下的探测能力。
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DGA-C Specifications
P/N 202-100-000
| Detector | Scintillator Crystal | Sodium Iodide, Na(TI) |
|---|---|---|
| Photomultiplier | R3991A (Hamamatsu) | |
| Mechanical | Diameter (OD) | 1.36” |
| Length (make-up) | 13.7” | |
| Weight | 3.0 lb | |
| End Connectors | Micro-D Subminiature, 15-Pin | |
| Material | Aluminum Alloy (chassis), Tungsten (shield) | |
| Performance | Sensitivity | 0.52* CPS/API |
| Front/Back Count Ratio (using source at 6”) | 14.0 using Barium-133 2.72 using Cesium-137 | |
| Accuracy | +/- 5% to 150°C +/- 10% to 175°C | |
| Environmental | Operating Temperature | -18°C to 175°C |
| Survival Temperature | -40°C to 200°C | |
| Heat/Cool Rate, Max. | 2.8°C (5°F) | |
| Vibration (3 axis) 50-1000Hz, Random | 30G (20G RMS) | |
| Shock (3 axis) | 1000G, 0.5ms, half-sine | |
| Power Requirements | DC Input Voltage | 17-48 VDC, 50VDC Max. |
| Tool Current | 8-11 mA | |
| Output Signal | Negative Pulse | +5V to GND, 5 uSec width |
* Counts are collected with gamma tool mounted within standard BeCu pressure barrel, (OD 1.875″, ID 1.500″). API Calibration performed with AEA Technology, QSA Inc., KUTh Field Verifier #188074, S/N 255 Radionuclides: K-40(11.7%), U-238(90 ppm), Th-232(40 ppm).