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Chi tiết:
Pocket Radiation
Monitor
Compact device intended for gamma and X-radiation ambient dose equivalent and ambient dose equivalent rate measurement, as well as for measurement of beta particle flux density on contaminated surfaces.
In search mode it measures count rate in counts per second.
AT6130 HAS TWO VARIANTS:
- w/o PC communication interface
- with Bluetooth interface
Applications
▪ Radiation protective measures in case of nuclear disasters
▪ Civil protection
▪ Radioecology
▪ Fire-fighting service
▪ Customs service
▪ Dosimetric monitoring in manufacturing facilities, health care and other institutions
▪ Identification of banknote, identity document, personal belongings, clothing, etc. contamination with radioactive substances
Features
▪ Low weight and small size
▪ Automatic compensation of intrinsic detector background
Operating principle
Device operating principle is based on the process of count rate measurement of impulses, generated in Geiger-Muller counter tube under the influence o f X, gamma and beta radiation.
When the filter cap opens the instrument switches to beta particle flux density measurement mode automatically.
Count rate is converted automatically into measurable physical values throughout the range. Energy compensating filter allows correcting energy dependence of sensitivity efficiently in entire energy range of photon radiation.
Microprocessor-based unit is responsible for controlling the radiation monitor operating modes, calculations, storing and displaying measurement results and for self-checking function.
The Radiation monitor can be secured in a holder to facilitate evaluation of radioactive contamination.
▪ Rapid reaction to statistically significant change of dose rate (measurement process restart)
▪ Selective measurement of beta and gamma radiation in mixed fields
▪ Field operation capability over a wide temperature range
▪ In search mode each registered gamma quantum (beta particle) is indicated by a sound signal
▪ Up to 2000 measurement results can be stored in non-volatile memory with information about measurement date and time
▪ Measurement results, current time, date and battery life indicator is displayed on matrix LCD screen
▪ Measurement results can be transmitted
to a PC via Bluetooth interface (If available)
▪ Headphones can be attached when working in noisy environment
▪ Bright white backlit LCD-screen
▪ Display in either Sv/h or in rem/h (configurable per request)
Specification
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Ambient gamma and X radiation dose |
0.01 µSv/h...10 mSv/h |
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rate equivalent indication range * |
or 1 µrem/h...1 rem/h |
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Ambient gamma and X radiation dose rate |
0.1 µSv/h...10 mSv/h |
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equivalent measurement range * |
or 10 µrem/h...1 rem/h |
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Ambient gamma and X radiation dose |
1 nSv...100 mSv |
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equivalent indication range * |
or 0.1 µrem...10 rem |
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Ambient gamma and X radiation dose |
0.1 µSv...100 mSv |
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equivalent measurement range * |
or 10 µrem...10 rem |
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Beta particles measurement range: * |
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- flux density |
10...1·104 particle·min-1·cm-2 |
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- surface activity |
0.5...500 Bq·cm-2 |
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- count rate |
0.1...1·104 cps |
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Intrinsic relative error of dose rate |
±20% max. |
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measurement in the range from |
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0.1 µSv/h to 10 mSv/h (10 µrem/h...1 rem/h) |
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X and gamma radiation energy range |
20 keV...3 MeV |
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Spectrum maximum energy range |
155 keV...3.5 MeV |
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of registered beta particles |
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Energy dependence |
±30% |
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relative to 662 keV (137Cs) |
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Sensitivity |
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To 137Cs gamma radiation |
2.8 cps/µSv·h-1 |
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To 90Sr + 90Y beta radiation |
0.05 cps/particles·min-1·cm-2 |
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Response time for dose |
≤7s |
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change from 1 to 10 µSv/h |
(accuracy error ≤±10%) |
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Radiation overloading |
Radiation monitor can withstand |
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100-fold rise of dose rate |
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measurement and beta particles |
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flux density upper range limit |
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for 5 minutes with readings |
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not lower than maximum |
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Burn-up life |
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