A highly sensitive GPS-equipped survey meter. By simply mounting it in a vehicle and driving, it measures and records accurate spatial radiation doses every second, mapping them in color on a map.
This is a GPS-equipped mobile survey meter system that enables high-precision and high-sensitivity fast measurements of gamma rays using a 2-inch NaI(Tl) scintillator. It is extremely easy to handle; simply turn on the power and it automatically measures, records, and color-maps the spatial dose rate. Furthermore, due to its high resolution, it allows for gamma-ray energy spectrum analysis, enabling the detection of artificial radionuclides such as Cs-134 and Cs-137, as well as natural radionuclides like K-40. Additionally, it features an alarm function that alerts you when a user-defined dose exceeds a set value, making it useful for detecting hotspots in parks, school facilities, and along school routes where children play. It also provides an audible warning if measurements cannot be obtained or if measurements are not being conducted correctly. Moreover, the tablet includes a camera function that allows for taking photos with information on the local dose rate, location, and time. The top of the photo includes the dose rate, location information (latitude and longitude), and the date and time in the format of year/month/day. The included rechargeable battery also enables walking surveys.
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basic information
The detector uses a high-capacity (103cc) NaI(Tl) scintillator with a diameter of 2 inches and a length of 2 inches. The detection device employs a 2-inch photomultiplier tube. By linking the ultra-sensitive detector and high-performance photomultiplier tube with GPS, it can measure and record the spatial dose rate over a wide area every second while moving at high speeds in a car or motorcycle, automatically mapping the dose rates with color coding on a map. The power supply includes an AC adapter powered by a vehicle-mounted AC/DC converter (included), as well as a rechargeable battery (approximately 8 hours of operation), allowing for walking surveys. Additionally, measurements can be taken while stored in the included fully waterproof hard case, enabling walking surveys even in inclement weather.
Price information
1,980,000 yen
Price range
P5
Delivery Time
P4
Applications/Examples of results
■Purpose: Used for measuring ambient dose rates and gamma rays. It enables extensive measurements, recording, and map mapping over a wide area in a short time through survey operations. Walking surveys using the included rechargeable battery are also possible. It can be used for measurements in accordance with the "Guidelines for Radiation Measurement" established by the Ministry of Education, Culture, Sports, Science and Technology and the "Environmental Radiation Monitoring Guidelines" set by the Nuclear Safety Commission. ■Examples of achievements: National universities, decontamination-related companies, local governments, NPOs, etc.
Detailed information
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Management and utilization in the database Measurement data can be stored in the built-in database management system of the accompanying laptop and displayed on a map with color coding based on the dose set as desired. (Measurement: NPO Furusato)
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Data sharing of dose maps and dose graphs. When you click on a point of interest in the dose graph, a pin will appear on the dose map, displaying the dose rate (μSv/h) and spectral graph for that point every second. The dose rates and spectral graphs for all areas covered during the drive are automatically recorded and can be checked.
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Intuitively grasping changes in dose rate By converting measurement data into KMZ format with the push of a button and displaying it in Google Earth, the height of the dose is shown in three dimensions, making changes in dose intuitively understandable.
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Recording dose information with photos It is possible to take photos with the attached tablet's camera that include the local dose, as well as location and date/time information. The top of the captured photo will display the dose rate, location information (latitude and longitude), and the year/month/date information.
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Automatically create a radiation dose map while moving by car. With the built-in GPS, it measures and records the accurate spatial dose rate every second while moving at high speeds in a vehicle, automatically creating a dose map on the map. Even without an internet connection, the built-in mapping software can display the dose color-coded. It is also possible to display the dose values.
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Convenient alarm function You can be notified by an alarm when the set dose exceeds a specified level, which helps in detecting hotspots. Additionally, if measurement data cannot be obtained or if measurements are not being conducted correctly, an alarm sound can also be triggered.
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Energy spectrum analysis High resolution enables gamma-ray energy spectrum analysis. In addition to artificial radionuclides such as Cs-134 and Cs-137, the presence of natural radionuclides like K-40 can also be confirmed. Spectrum data is automatically recorded every second. When detecting hotspots, the confirmation of radionuclides can be achieved through spectrum measurement. The spectrum can also be displayed in logarithmic form.
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Measurements can be taken while the detector is still in the hard case. The hard case is made by PELICAN, which is said to have the highest shock resistance in the world, protecting the detector, tablet, and laptop from water, dust, and impact. You can measure while the detector and tablet are still in the hard case.
Line up（1）
| Model number | overview |
|---|---|
| GeoGamma220 | GPS-equipped survey meter system that enables high-precision/high-sensitivity fast-moving measurements using a 2-inch NaI(Tl) scintillator |
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Company information
Meteorological Agency Forecasting Business License No. 32 / We are a private meteorological company that provides weather information services and disaster prevention information systems. Since our establishment, we have aimed to contribute to local communities by providing weather information closely related to daily life from weather information across Japan, taking joy in being of service to our customers for their convenience, peace of mind, and safety.