ELSE NUCLEAR
Bild: ELSE NUCLEAR
GM-1/MERCURY
Geiger-Müller gamma detectors for fixed monitoring
Gamma detectors with energy-compensated Geiger-Müller tubes in rugged aluminium cylinders with built-in HV. GM-1 has one tube and measures up to 1 mSv/h; MERCURY has two tubes and switches automatically to reach 1 Sv/h. They connect to a SATURN ratemeter and can be networked to a PC running 5700 sMON.
- Detector type
- Energy-compensated GM tubes; GM-1 one tube, MERCURY two tubes with automatic switching by count rate1
- Energy range
- 40–1300 keV2
- Weight
- <1 kg2
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
- Stand-alone version for direct connection to a PC
- IP65 housing for outdoor use (MERCURY)
- Battery-operated station with ZigBee and GPS (PS-ZB)
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 | Energy-compensated GM tubes; GM-1 one tube, MERCURY two tubes with automatic switching by count rate1 |
|---|
Performance
| Linearity | Deviation <10% from 100 nSv/h to 100 mSv/h2 |
|---|
Measuring range
| Dose-rate range | GM-1: 100 nSv/h–1 mSv/h; MERCURY: 100 nSv/h–1 Sv/h2 |
|---|---|
| Energy range | 40–1300 keV2 |
| Energy response | +30/−20%2 |
Connectivity & interface
| Communication | GM-1: TTL output or RS485; MERCURY: RS232 or RS485 (ZigBee wireless on request)2 |
|---|
Ordering & accessories
| Options | ZigBee (MERCURY); on request IP65 housing (MERCURY), battery-operated PS-ZB station with ZigBee and GPS, airtight duct holder GM-ATH (GM-1), wall mounting and traceable calibration (¹³⁷Cs)2 |
|---|
General
| Compatibility | Connects to a SATURN ratemeter providing power, signal processing and display; units can be networked to a PC running 5700 sMON; a stand-alone version for direct PC connection is available1 |
|---|
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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Oscar ÅgerstamFounder & CEO