Sensors
Medusa provides a variety of survey tools designed for effortless measurement of spatial soil variation. Our gamma-ray spectrometers, at the core of these tools, passively detect the natural radioactivity in the soil. They are incredibly user-friendly, making it easy for anyone to use.
On this page, you can explore the diverse range of sensor sizes provided by Medusa Radiometrics. Each sensor is tailored for a distinct application. For those interested in the underlying principles, an explanation of using gamma-ray spectrometers for soil information gathering is available at the page's end.
Maximum efficiency sensors
The MS-4000 airborne gamma-ray sensor. A detector used by geophysical survey companies, geotechnical consultants, and research institutes to capture soil variation in large areas.
| Use | |
|---|---|
| Typical usage | Airborne |
| Mapping speeds | > 60 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 4 litre CsI |
| Weight | 29 Kg |
| Sensors | Spectrometer, GPS, PTH |
The MS-2000 detector is optimized for efficient soil and sediment mapping while mounted on an off-road vehicle. Robust, efficient, and reliable in harsh conditions.
| Use | |
|---|---|
| Typical usage | Vehicleborne |
| Mapping speeds | > 30 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 2 litre CsI |
| Weight | 12 Kg |
| Sensors | Spectrometer, GPS, PTH |
Weight optimized sensors
The Medusa Radiometrics MS-1000 detector is an autonomous and robust system suitable for drone-borne surveys for mineral prospecting, contamination mapping, and efficient monitoring applications.
| Use | |
|---|---|
| Typical usage | Droneborne |
| Mapping speeds | > 20 km/h |
| Applications | Mining & environmental |
| Specs | |
|---|---|
| Scintillation crystal | 1 litre Csl |
| Weight | 6.7 Kg |
| Sensors | Spectrometer, GPS, PTH |
The MS-700 is, like its big brother, the MS-1000, optimized for drone use. Its payload under 5 kg makes it well-suited for off-the-shelf drones while maximizing its efficiency per unit of weight.
| Use | |
|---|---|
| Typical usage | Drone/handheld |
| Mapping speeds | > 15 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 700 ml Csl |
| Weight | 4.7 Kg |
| Sensors | Spectrometer, GPS, PTH |
The MS-350 is designed for hand-held surveys. However, it is also successfully used as an ultralight drone-borne system. With its weight below 3 kg, it is well-suited for smaller drones.
| Use | |
|---|---|
| Typical usage | Drone/handheld |
| Mapping speeds | 5 - 10 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 350 ml Csl |
| Weight | 2.7 Kg |
| Sensors | Spectrometer, GPS, PTH |
Stationary sensors
The gSMS is designed for stationary, long-term outdoor measurements. The data is uploaded to the cloud to give insight into the readings, used for monitoring of radionuclides and soil moisture.
| Use | |
|---|---|
| Typical usage | Stationary |
| Mapping speeds | stationary |
| Applications | Monitoring, soil moisture determination |
| Specs | |
|---|---|
| Scintillation crystal | 100 ml Csl |
| Weight | 1.5 Kg |
| Sensors | Spectrometer, GPS, PTH, rain monitor |
mDOS & Gamman
medusa Detector Operating System (mDOS)
We offer a uniform interface across all our products. Whether conducting an airborne survey for mineral exploration, locating a lost source with a UAV, or utilizing our detector for a handheld survey to map the environment, you can rely on the same user-friendly interface. This software is specifically developed for in-the-field use, optimized for ease of use, and designed to automate your survey workflow.
Gamman post-processing software
For situations that require post-processing of data, a seamless connection with mDOS facilitates rapid reprocessing. The system is available with a graphical user interface and also as a set of command-line tools for both Windows and Linux, allowing you to integrate the analysis seamlessly into your existing workflow.
The soil is ticking
Every soil contains soil radionuclides like potassium (K-40), uranium (U-238), thorium (Th-232), and sometimes cesium (Cs-137). The Medusa sensor can measure the signals emitted by these radionuclides. With our sensor, even the smallest variations in radionuclide concentrations within the soil can be detected, offering valuable insights into the soil's composition.
The fingerprint of the soil
Our sensors provide accurate insights into soil composition and a wide range of other soil parameters. In fact, the radionuclide signal is so distinctive that it is often referred to as the soil's fingerprint. Our sensors are used to measure soil composition and diverse soil properties including soil texture, minerals, and soil pollutants like heavy metals.
Size matters
Medusa has developed a variety of sensors designed for specific applications. Although all sensors share the same technology, operating system, robust electronics, and easy-to-use interface, the difference lies in their measurement efficiency. Larger sensors offer enhanced efficiency, enabling faster survey speeds and larger survey heights.
Finding the right sensor for the job is an intricate interplay between the accuracy needed on one hand and parameters such as the working speed, measurement height, and available payload on the other hand. For instance, when using drones, the available payload will restrict the maximum detector weight.
