Portable high sensitive radiation monitors intended to search and detect gamma radiation sources, measure ambient gamma radiation dose equivalent rate and alpha and beta radiation flux density from contaminated surfaces and estimate 137Cs specific activity in environmental samples
Features
| - Multifunctionality |
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| - High sensitivity |
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| - Fast response to radiation background changing |
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| - Wide-temperature operation under field conditions |
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| - Built-in LED stabilization system of the measuring path providing no need to use a reference source |
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| - 256-channel MCA |
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| - Special large backlit LCD |
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| - Alarm at threshold exceeding |
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| - Logging and transfer measurement results to PC |
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| - Keeping up to 100 measurement results in the instrument memory |
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| - Scrap metal radiation monitoring |
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| - Specific activity measuring under field conditions as an option |
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| - Three power types |
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Application
| - Search, detection and location of radiation sources |
| - Scrap metal radiation monitoring |
| - Radiation monitoring of the environment, area, targets and materials |
| - Dosimetric and radiometric monitoring at industrial enterprises |
| - Monitoring of contamination fluctuations |
|
| - Radiometric control of 137Cs in agricultural products under field conditions |
| - On-site radioactive monitoring of mushrooms and berries |
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The main function of the radiation monitors AT1125 and AT1125A is to search, detect and locate gamma radiation sources and measure ambient gamma radiation dose equivalent rate from near-background levels. The instruments are high sensitive and have fast response to slight radiation background changes due to using scintillation NaI(Tl) and at the same time they provide accurate dose rate measuring in the wide gamma radiation energy range because of the correction function 'instrument spectrum - dose' in 13 intervals of the whole energy range of 0.05-3 MeV. The radiation monitor AT1125A has scintillation NaI(Tl) as well as a G-M tube, which extends greatly ambient gamma radiation dose equivalent rate measuring range. The instrument can be connected to the external smart probe BDPS-02 providing alpha and beta radiation flux density measuring from contaminated surfaces and also ambient x-ray and gamma radiation dose equivalent rate and dose equivalent measuring. The radiation monitors can have an optional operation mode of 137Cs specific activity monitoring in liquid and granular samples under field conditions.
Specification
| |
 |
 |
| Detectors |
|
| AT1125 |
NaI(Tl) - ø25х40 mm |
| AT1125A |
NaI(Tl) - ø25х40 mm |
| |
built-in G-M tube |
| BDPS-02 |
G-M end-window counter |
| Ambient x-ray and gamma radiation dose equivalent rate measuring range |
|
| AT1125 |
30 nSv/h - 300 µSv/h |
| AT1125A |
30 nSv/h - 100 mSv/h |
| BDPS-02 |
0.1 µSv/h - 30 mSv/h |
| Ambient gamma radiation dose equivalent range |
|
| AT1125 |
30 nSv - 10 mSv |
| AT1125A |
30 nSv - 10 Sv |
| BDPS-02 |
0.1 µSv - 1 Sv |
| Alpha radiation flux density measuring range |
|
| BDPS-02 |
5-106 part./(min·cm2) |
| Beta radiation flux density measuring range |
|
| BDPS-02 |
6-106 part./(min·cm2) |
| Intrinsic dose and dose rate measurement error |
|
| AT1125, AT1125A |
± 15 % |
| BDPS-02 |
± 20 % |
| X-ray and gamma radiation energy range |
|
| AT1125, AT1125A |
0.05 - 3 MeV |
| BDPS-02 |
0.02 - 3 MeV |
| Alpha radiation energy range |
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| BDPS-02 |
4 - 7 MeV |
| Beta radiation energy range |
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| BDPS-02 |
155 keV - 3.5 MeV |
| Energy sensitivity response |
|
| AT1125, AT1125A |
± 15 % |
| BDPS-02 |
± 30 % |
| Sensitivity on 137Cs |
|
| AT1125, AT1125A |
350 cps on 1 µSv/h |
| BDPS-02 |
6.6 cps on 1 µSv/h |
| 137Cs specific activity measuring range |
|
| with protection unit |
20-105 Bq/kg |
| without protection unit |
50-105 Bq/kg |
| Intrinsic 137Cs specific activity measurement error |
± 20 % |
| Count rate measuring range |
1-105 s-1 |
| Measurement time of natural radiation background of 0.1 µSv/h at statistical error of ± 15 % (Р=0,95) |
less than 20 s |
| Detection time of a 137Cs source, 10 kBq at 7 cm |
less than 2 s |
| Operation mode setup time |
1 min |
| Continuous operation time |
|
| AC mains or DC supply |
24 h |
| built-in accumulator unit |
24 h |
| Operating temperature range |
-20 - + 50°С |
| Complementary error within the operating temperature range |
± 10 % |
| Relative humidity at 35°С |
90 % |
| Protection class |
IP54 |
| Power requirements |
|
| built-in accumulator unit |
6 V |
| AC mains, 50 Hz |
220 V |
| DC supply |
12 V |
| Radio disturbance |
|
| CEI/IEC CISPR 22:1997 |
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| Electromagnetic compatibility |
|
| CEI/IEC 61000-4-2:1995 |
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| IEC 61000-4-3:1995 |
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| Weight |
|
| AT1125, AT1125A |
1.0 kg |
| BDPS-02 |
0.3 kg |
| protection unit |
17.0 kg |
| Dimensions |
|
| AT1125, AT1125A |
85х258х67 mm |
| BDPS-02 |
138х86х60 mm |
| protection unit |
ø 190х363 mm |
Complete set: radiation monitor, AC adapter, handle, holster and Manual.
Smart probe BDPS-02, cable to connect to PC and applied software, cable for DC supply, telescopic bar 1.6 m, packing case, kit of accessories to measure specific activity (protection unit, support, measuring vessels 0.5 l) are options and they are supplied on additional order.
Radiation monitors AT1125 and AT1125A have pattern approval certificates of Republic of Belarus, Russian Federation, Ukraine and Kazakhstan.
They comply with IEC 60846 and IEC 61563 International standard requirements
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