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Mô tả ngắn:AT1121, AT1123 X-RAY and Gamma Radiation Dosimeters
Liên hệ: 0941.88.99.83 hoặc email: midtechvn@gmail.com - Mr. Hoàng Anh Quý!
Chi tiết: Photon radiation energy range 15 keV ... 10 MeV
▪ X-ray diagnostics
▪ Nuclear medicine
▪ Radiology
▪ X-ray and gamma-ray flaw detection
▪ X-ray and gamma-ray testing
▪ Search X-ray and accelerating apparatus
▪ Radiation accidents
▪ Radiation monitoring
▪ Nuclear industry
▪ Accelerating installations
▪ Research activities
Features
▪ Tissue-equivalent detector - scintillation plastic
▪ High sensitivity results in rapid measurements with good statistical confidence
▪ Wide measurement range with 8 orders of magnitude and more
▪ Wide energy range starting from 15 keV
▪ Measurement of short-term exposure dose rate and time (from 0.03 s) for continuous radiation
▪ Measurement of average dose rate of pulse radiation with duration from 10 ns [AT1123]
▪ Large dedicated digital/analogue LCD screen with backlighting
▪ Integrated system for LED measurement path stabilization
▪ Sound and visual alarm in case threshold level is exceeded
▪ External control panel can be used for remote measurement
▪ Fixed installation option with external audio-visual alarm with four groups of potential-free contacts for actuator control
▪ Connection to PC is available in order to create a continuous monitoring system with documenting function
▪ Tree types of power sources
▪ Severe operating conditions
Operating principle
Main function of the dosimeter is the measurement of X-ray and gamma radiation within wide ranges of ambient dose equivalent rate and energy. Additional functions: detecting soft and hard gamma radiation sources, beta radiation sources, short-term and pulse radiation with exposure time assessment, and detecting moving sources as well.
Dosimeters automatically save maximum dose rate value for the time of operation and are able to store up to 999 measurement results in non-volatile memory for a long time and to subsequently transfer this data to PC.
Continuous performance self-testing is done during operation.
External control unit and external alarm unit can be attached to dosimeters for remote monitoring application.
Dosimeter with external control and external alarm units
Specification
|
Detector |
Scintillation plastic, Ø30x15 mm |
|
Ambient dose equivalent rate measurement range |
|
|
- Continuous long-term radiation |
|
|
AT1121, AТ1123 |
50 nSv/h ... 10 Sv/h |
|
- Continuous short-term radiation |
|
|
AT1121, AТ1123 |
5 µSv/h ... 10 Sv/h |
|
- Pulse radiation |
|
|
AT1123 |
0.1 µSv/h ... 10 Sv/h |
|
Ambient dose equivalent measurement range |
10 nSv ... 10 Sv |
|
Energy range |
|
|
- Continuous long-term and short-term radiation |
15 keV ... 10 MeV |
|
- Pulse radiation (АТ1123) |
15 keV ... 10 MeV |
|
Energy dependence relative to 662 keV (137Cs) |
|
|
15 ... 60 keV (with protection cap "0.025 – 3 MeV") |
±35% |
| 60 keV ... 3 MeV (with protection cap "0.025 – 3 MeV") | ±25% |
|
60 keV ... 10 MeV (with protection cap "0.06 – 10 MeV") |
±25% |
|
10 ... 20 MeV * (with protection cap "0.06 – 10 MeV") |
-50% max. |
|
Minimum duration of pulse radiation for impulse dose rate 1.3 Sv/s (AT1123) |
10 ns |
|
Minimum duration of continuous short-term radiation |
0.03 s |
|
Intrinsic relative measurement error |
|
|
- Continuous long-term and short-term radiation |
±15% max. |
|
- Pulse radiation |
±30% max. |
|
Sensitivity to 137Cs gamma radiation |
70 cps/µSv·h-1 |
|
Response time for dose rate change from 0.1 µSv/h to 1 µSv/h (accuracy error ≤±10%) |
<2 s |
|
Time of 137Cs gamma radiation dose rate measurement with statistical error ±15% (P=0.95) for the following dose rate: |
|
|
50 nSv/h |
≤60 s |
|
0.3 µSv/h |
≤10 s |
|
over 2 µSv/h (Up to 10 Sv/h) |
≤2 s |
|
Sensitivity to associated beta radiation of 90Sr + 90Y with filter (with protection cap "0.06 – 10 MeV") at 5 cm distance |
3·10-7 µSv·h-1·Bq-1 |
|
Burn-up life |
≥100 Sv |
|
Operation mode setup time |
1 min |
|
Power supply and continuous run time |
|
|
- Alternate or direct current mains |
≥24 h |
|
- Internal battery |
|
|
AТ1121 |
≥24 h |
|
AТ1123 |
≥12 h |
|
Protection class |
IP54 |
|
Working temperature range |
-30°C ... +50°C |
|
Relative humidity with air temperature ≤35°C without condensation |
≤
Việc Nhật quyết định xả nước thải từ nhà máy Fukushima ra đại dương bị nhiều nước phản đối, nhưng giới khoa học cho rằng nó không nguy hiểm.
CÔNG TY TNHH THƯƠNG MẠI VÀ DỊCH VỤ KHOA HỌC CÔNG NGHỆ MINH ĐỨC
Địa chỉ: Số 3, Ngõ 118/34, Đào Tấn, Phường Ngọc Khánh, Quận Ba Đình, Thành phố Hà Nội, Việt Nam.
Văn phòng giao dịch: Số 23 Duy Tân, Cầu Giấy, Hà Nội.
Phone: 0976 275 983 hoặc 0941.88.99.83 - Mr. Hoàng Anh Quý
Email: midtechvn@gmail.com
midtechvn@gmail.com
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