ELSE NUCLEAR
ELSE NUCLEAR
HERMES
Rugged portable units for radiation survey and emergency response
- Detector type
- HERMES NAI: NaI(Tl) 3 × 3 in with SiPM
- Spectrum channels
- HERMES NAI: up to 2,048
- Energy range
- HERMES NAI: 30 keV–3 MeV
15 referenced values
Bild: ELSE NUCLEAR
HERMES DRONE
Gamma spectrometry and radiation mapping payload for drones
Compact, autonomous payload for gamma monitoring and radiological mapping from professional UAVs, for large, inaccessible or hazardous areas. A NaI(Tl) spectrometer identifies radionuclides and measures dose rate, and a MERCURY detector can be added for an extended dose-rate range. The payload has its own power, processing and communication and needs no interface with the UAV.
- Detector type
- NaI(Tl) scintillator with crystal sizes up to 3 × 3 in and digital MCA with up to 2,048 channels; optional MERCURY dose-rate detector (energy-compensated dual GM)1
- Energy range
- 40 keV–3 MeV; 50 keV–3 MeV with 2 × 2 in NaI(Tl)1
- Weight
- About 2.5 kg (2 × 2 in NaI(Tl))1
Download product sheet (PDF)All values with references – for tender documents
Specifications checked against the manufacturer’s documents on 2026-10-17
Overview
Key features
- Data synchronised with position and altitude and stored on board during outages
- Web interface with live spectra and maps
- Compact, vibration-resistant IP65 enclosure
Specifications
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
Detector
| Detector type | NaI(Tl) scintillator with crystal sizes up to 3 × 3 in and digital MCA with up to 2,048 channels; optional MERCURY dose-rate detector (energy-compensated dual GM)1 |
|---|
Performance
| Energy resolution at 662 keV | ≤7.5% FWHM (2 × 2 in NaI(Tl))1 |
|---|
Measuring range
| Dose-rate range | 10 nSv/h–1 Sv/h (with MERCURY)1 |
|---|---|
| Energy range | 40 keV–3 MeV; 50 keV–3 MeV with 2 × 2 in NaI(Tl)1 |
Software & data
| Software | Gamma spectral analysis, manual, timed and distance-based acquisition, dose rate normalised to 1 m above ground, soil concentrations of ⁴⁰K, ²³⁸U and ²³²Th, georeferenced heat maps with alarm thresholds, kriging with NASVD noise reduction and export to CSV and HTML1 |
|---|
Connectivity & interface
| Communication | Industrial router with LTE/4G plus Wi-Fi; GNSS position and altitude synchronised with measurements; web interface from a networked PC or tablet1 |
|---|
Power & battery
| Power supply | Independent onboard battery, autonomy depending on configuration; needs no power or data interface with the UAV1 |
|---|
Mechanical
| Dimensions | Approx. 300 × 150 × 150 mm (2 × 2 in NaI(Tl))1 |
|---|---|
| Weight | About 2.5 kg (2 × 2 in NaI(Tl))1 |
Environment & ratings
| IP rating | IP65, vibration-resistant enclosure1 |
|---|
Ordering & accessories
| Options | MERCURY for extended-range dose rate; other detector materials, crystal geometries and MCA configurations on request; rugged tablet and warranty extension (24 months)1 |
|---|
The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.
Documents
Sources
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
- 1
Related products
ELSE NUCLEAR
GM-1/MERCURY
Geiger-Müller gamma detectors for fixed monitoring
- Detector type
- Energy-compensated GM tubes; GM-1 one tube, MERCURY two tubes with automatic switching by count rate
- Energy range
- 40–1300 keV
- Weight
- <1 kg
12 referenced values
ELSE NUCLEAR
HERMES UW
Submersible gamma spectrometer and dose-rate meter for pools
- Detector type
- LaBr₃(Ce³⁺) scintillator with SiPM for spectrometry; wide-range GM tube for dose rate
- Energy range
- 30 keV–2 MeV
- Weight
- Support frame <40 kg; probe <5 kg
14 referenced values
ELSE NUCLEAR
B-RAD
Gamma spectrometry meter
- Detector type
- 0.6 × 0.6 inch LaBr₃(Ce³⁺), SiPM
- Energy range
- 30 keV–2 MeV
- Energy resolution
- 3.3% FWHM at 662 keV
12 referenced values
Contact us
Questions about this product?
We help you choose the right configuration, detector and accessories for your measurement task.
Oscar ÅgerstamFounder & CEO