ELSE NUCLEAR
ELSE NUCLEAR
HERMES GSU
Portable gamma spectrometry
- Detector type
- 2 × 2 inch NaI(Tl), SiPM
- Energy range
- 30 keV–3 MeV
- Typical energy resolution, Cs-137
- Below 7.5%
12 referenced values
Bild: ELSE NUCLEAR
HERMES
Rugged portable units for radiation survey and emergency response
Portable survey units in rugged technical cases for gamma and neutron detection, dose-rate measurement and gamma spectrometry. They are handheld or vehicle-mounted and configured with different detectors – NaI(Tl), CsI(Tl), GM tubes, plastic scintillators or neutron counters. The software shows dose rate, identified nuclides and an interactive heat map, and the unit can be operated remotely from a smartphone or tablet.
- Detector type
- HERMES NAI: NaI(Tl) 3 × 3 in with SiPM2
- Spectrum channels
- HERMES NAI: up to 2,0482
- Energy range
- HERMES NAI: 30 keV–3 MeV2
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
- Automatic energy calibration on natural background – no source needed
- Integrated GPS, LAN, Wi-Fi and mobile connectivity
- Vehicle mounting, backpack configuration and photovoltaic panel on request
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 | HERMES NAI: NaI(Tl) 3 × 3 in with SiPM2 |
|---|
Performance
| Energy resolution at 662 keV | HERMES NAI: <7.5% (typical)2 |
|---|
Electronics & signal
| Spectrum channels | HERMES NAI: up to 2,0482 |
|---|
Software & data
| Software | Real-time dose rate, nuclide identification, alarms and interactive heat mapping; scan results, GPS coordinates and events logged locally; gain stabilisation, dead-time correction and automatic energy calibration on natural background1 |
|---|
Connectivity & interface
| Communication | HERMES NAI: LAN, Wi-Fi, mobile and Bluetooth; remote control through a smartphone app2 |
|---|
Power & battery
| Battery life | HERMES NAI: LiFePO₄ batteries, typically ≥8 h operation2 |
|---|---|
| Power supply | LiFePO4 batteries (typically ≥ 8 h operation)2 |
Mechanical
| Dimensions | HERMES NAI: 410 × 340 × 205 mm (W × L × H)2 |
|---|---|
| Weight | HERMES NAI: <15 kg including case2 |
Environment & ratings
| IP rating | HERMES NAI: IP67 with closed lid2 |
|---|---|
| Operating temperature | HERMES NAI: −20 to +50 °C2 |
Ordering & accessories
| Configurations | NAI/CSI (NaI(Tl) or CsI(Tl) with MCA for gamma spectrometry), GMT/PLA (GM or plastic detector for high-sensitivity gamma monitoring), NEU (¹⁰B-ZnS neutron detector with plastic moderator), SENTINEL (NaI(Tl), GM tubes and neutron detector)1 |
|---|---|
| Accessories | Vehicle mounting kit with cigarette-lighter power adapter, outdoor long-term mounting kit, tablet PC, backpack configuration and photovoltaic panel (on request)2 |
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
- 2
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- Detector type
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- Energy range
- 40 keV–3 MeV; 50 keV–3 MeV with 2 × 2 in NaI(Tl)
- Weight
- About 2.5 kg (2 × 2 in NaI(Tl))
11 referenced values
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- Detector type
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- Energy range
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- Weight
- Support frame <40 kg; probe <5 kg
14 referenced values
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- Detector type
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- Energy range
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- Energy resolution
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12 referenced values
Contact us
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Oscar ÅgerstamFounder & CEO