New SPRD «SPECTRA» Search Dosimeter-Radiometer MKS-11GN
Features
- New generation high sensitivity CsI scintillation detectors of gamma and LiI of neutron radiation with solid state (silicon) photomultiplier.
- Color display with high resolution.
- Storage and transfer of 250 complete gamma radiation spectra.
- Powerful CPU and improved algorithms for spectra processing.
- New software for detailed laboratory research and spectra processing.
- Integrated GPS/GLONASS-receiver.
- No “microphone effect”.
- High thermal stability.
- Powered by built-in lithium polymer storage batteries that can be charged via USB-cable.
- The dosimeter communicates with a PC via USB-port.
- Real-time identification of spectra.
- Identification of radionuclides with specification of the categories they belong to (in compliance with IAEA requirements):– medical radionuclides: 18F, 67Ga, 51Cr, 75Se, 89Sr, 99Mo, 99mTc, 103Pd, 111In, 123I, 125I, 131I, 153Sm, 201Tl, 133Хе;– industrial radionuclides: 57Co, 60Co, 133Ba, 137Cs, 192Ir,152Eu, 22Na, 241Am;– special nuclear materials: 233U, 235U, 237Np, Pu [Reactor grade plutonium (more than 6% 240Pu)];
– naturally occurring radioactive materials: 40K, 138La, 226Ra, 232Th-decay series, 238U-decay series.
Note. The list of nuclides the device is able to identify may be extended if needed.
- Threshold alarm system with four independent threshold levels:– search threshold level (threshold level of count rate from the detector photon and neutron ionizing radiation);– safety threshold level (threshold level of photon and neutron ionizing radiation DER).
- Light color alarm (indication) of threshold levels exceeding (gamma radiation – red color, neutron – blue) and visual alarm on the side of the device.
- Ingress protection rating IP67.
Specifications
| Gamma radiation sensitivity for 137Cs, not less than | cps/(µSv/h) | 200 |
| Neutron radiation sensitivity for: | ||
| – thermal neutrons, not less than | pulse·cm2/neutron | 1.2 ± 0.12 |
| – fast neutrons, not less than | pulse·cm2/neutron | 0.120 ± 0.012 |
| Measurement range of photon-ionizing radiation DER | 0.01 µSv/h … 1 Sv/h | |
| Measurement range of neutron radiation DER | 0.01 µSv/h … 10 mSv/h | |
| Indication range of photon-ionizing radiation count rate | cps | 1 … 25000 |
| Indication range of neutron radiation count rate | cps | 0.01 … 25000 |
| Main relative permissible error limits of photon-ionizing radiation DER measurement | % | ±(15+1/H*(10)), where H*(10) is a numeric value of measured DER equivalent to μSv/h |
| Energy range of registered photon-ionizing radiation | MeV | 0.02 … 3.00 |
| Energy dependence of the device readings during photon-ionizing radiation DER measurement in the energy range from 0.05 to 3.00 MeV relative to 0.662 MeV energy (137Cs) | % | ±25 |
| Energy range of registered neutron radiation | from thermal neutrons to 14 MeV | |
| Number of amplitude gamma spectrum channels | channel | 2048 |
| Setup time of operating mode of the device, not more than | min | 1 |
| Calibration time relative to gamma background | s | 2 … 60 |
| Operating supply voltage of the dosimeter from Li-Ion storage battery | V | 3,7 |
| Time of continuous operation with fully charged storage batteries under conditions of normal background radiation with switched off display backlight, not less | hours | 45 |
| Operating temperature range | °С | -20 … +50 |
| Dimensions of the dosimeter, not more than | mm | 67 х 126 х 30 |
| Weight of the dosimeter, not more than | kg | 0.28 |
