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SemeaTech's 3cc Cesium lodine Gamma Sensor consists of a cesium iodide crystal, a photodiode, and a high-gain preamplifier that can be used to measure X and γ radiation from 50keV to 3MeV. It features high sensitivity and an instant response time (of about a second) to a very minor change of X and γ (0.01μSv/h).
The sensor is housed in a 45x24x18±0.5mm metal housing with a cable of approx, 55mm as the connection interface. The connector is a 4-pin MOLEX PicoBlade 1.25mm (.049'') connector (reference Molex connector, part No.51021-0400). Pin assignment are shown below:
| Output |
A full width at half maximum of appr. 60μs quasi-Gaussian pulse
|
| Power | 2.7 V ~ 3.3 V |
| Bias | 30 V recommended, maximum 50 V |
| Noise Level | 80 mV ± 15 mV at room temperature |
| Energy Detection Range | 50 keV ~ 3 MeV |
| Response Time | 1 s |
| Signal Amplitude | 0.9 V ± 0.1 V @ 662 keV |
| Detection Efficiency | 25,000 ± 20%count/uSv @ 662 keV |
| Noise Temperature Effect | Refer to PIN diode characteristics |
| Working Temperature | -20℃ ~ 50℃ |
| Life Span | 5 years |
| Upper Limit of Measurable Dose Rate | 20 mRem/h |
