Medusa Radiometrics MS-350 gamma-ray spectrometer
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The Medusa Radiometrics MS-350 is a gamma-ray spectrometer primarily designed for drone-borne surveys, and it is also used successfully as a handheld (walking) survey system. HobiTech supplies it in India as an Official Partner of SPH Engineering.
Gamma-ray spectrometer
| Recommended application | Handheld / drone-borne |
| Scintillation crystal | 3x3″ (350 ml) CsI |
| Typical mapping speed | Up to 15 km/h |
| Recording frequency | Up to 5 Hz |
| Radionuclide analysis | 40K, 238U, 232Th and 137Cs |
Electrical
| Input voltage | 5 - 35 V |
| Power consumption | 3 W (average), 6 W (max) |
| Battery | Up to 8 hours |
GPS
| Type | uBlox ZED-F9P |
| Accuracy | 1.5 m CEP |
| RTK accuracy | <1 cm |
| Signals | GLONASS, BeiDou, Galileo |
Mechanical
| Dimension | 100 (Ø) x 215 (L) mm |
| Weight | 2.7 kg |
| Operating temperature | -20 to +65 °C |
| IP rating | IP65 |
Connectivity
| Wi-Fi | 2.4 and 5 GHz |
| Ethernet | 100 Mbps |
| Port | RS-232 |
Data
| Format | JSON, NMEA, CSV |
| Streaming | RS-232, ethernet and Wi-Fi |
| Sensors | Spectrometer, GPS, PTH |
| Internal storage | 16 GB, 500 hours of data |
Included software
| Onboard processing (by mDOS) | Real-time analysis; Survey planner; Real-time radionuclide inspection; Sample measurements |
| Post-processing (by GammAn) | Full spectrum analysis (FSA); Window analysis (WA) |
Support
| Online support | Extensive library of support guides |
| Custom support | Optional |
Documentation & data sets
What is the MS-350 used for?
Medusa Radiometrics states that the MS-350 is primarily designed for drone-borne surveys. It is also used successfully as a handheld (walking) survey system. With its weight of 2.7 kg, it is well suited for carrying around and for the smaller off-the-shelf drones.
The MS-350 analyses four radionuclides: 40K, 238U, 232Th and 137Cs. Medusa lists these typical applications:
- Drone-borne measurements
- Handheld soil scanning
- NORM characterisation
- Contamination mapping
Sensor key features
- 2.7 kg, easy to integrate under a drone
- Ultra rugged 350 ml CsI scintillator crystal
- Optimised for ease of use
- Integrated data storage and processing
- Life-long feature updates
Medusa Detector Operating System (mDOS)
Medusa describes mDOS as "a uniform interface for all our sensors". Whether you are doing an airborne survey, locating a lost source with a UAV, or using the detector for a handheld survey to map the environment, you use the same familiar interface.
mDOS is developed for in-the-field use. It is optimised for real-time monitoring, ease of use and automating your survey workflow. On board, it handles real-time analysis, survey planning, real-time radionuclide inspection and sample measurements. For post-processing, GammAn provides full spectrum analysis (FSA) and window analysis (WA).
What do you need to run it?
The MS-350 has its own uBlox ZED-F9P GPS (1.5 m CEP, under 1 cm with RTK) and 16 GB of internal storage, enough for 500 hours of data. It also records PTH sensor data alongside the spectrometer and GPS.
- Power: 5 - 35 V input, 3 W on average and 6 W maximum. Battery life is up to 8 hours.
- Connections: Wi-Fi (2.4 and 5 GHz), 100 Mbps Ethernet and an RS-232 port. Data can be streamed over RS-232, Ethernet and Wi-Fi.
- Data: saved as JSON, NMEA or CSV.
- Drone: Medusa describes the MS-350 as easy to integrate under a drone. At below 3 kg, it is well suited to smaller drones.
Browse all gamma-ray spectrometers and the wider Integrated Systems range.
About Medusa Radiometrics
Medusa Radiometrics, based in Groningen, the Netherlands, has over 20 years of experience in developing gamma-ray spectrometers and their applications. It works in scientific collaboration with research institutes and publishes its analysis procedures in peer-reviewed papers. Medusa also shares its knowledge through whitepapers, tutorials and case studies.
Why buy the MS-350 from HobiTech?
HobiTech is an Official Partner of SPH Engineering based in Bengaluru, India. Every order comes with a GST invoice, and our local team supports the sensor, the drone and the software. SPH training courses are also available through HobiTech. Read more on SPH Engineering's radiometric mapping page or the Medusa Radiometrics MS-350 page.
Frequently Asked Questions
What does the MS-350 measure?
Gamma rays, using a 3x3″ (350 ml) CsI scintillation crystal. It analyses 40K, 238U, 232Th and 137Cs, and records at up to 5 Hz.
Is the MS-350 for drones or for handheld use?
Both. It is primarily designed for drone-borne surveys, and it is also used successfully as a handheld (walking) survey system.
How much does it weigh?
2.7 kg. The sensor measures 100 mm in diameter and 215 mm in length.
How long does the battery last?
Up to 8 hours. Average power consumption is 3 W, with a maximum of 6 W.
What software is included?
mDOS runs on board for real-time analysis, survey planning, real-time radionuclide inspection and sample measurements. GammAn handles post-processing with full spectrum analysis (FSA) and window analysis (WA).
How do I buy the MS-350 in India?
Use Request a quote on this page, or call HobiTech on +91 70225 26509. We confirm the price and configuration, and every order comes with a GST invoice.