Thermo Scientific

RadEye G

Continuously monitor your radiation exposure in any nuclear or radiological emergency. The Thermo Scientific RadEye G Series of personal radiation detectors provide first responders with quick, reliable gamma and dose rate measurements. These light-weight, handheld Geiger counters detect and measure very low gamma energies.

Even the smallest change in radiation rates are displayed immediately, while coincidentally occurring fluctuations are suppressed. For hazmat teams investigating potentially explosive atmospheres, intrinsically safe RadEye G models meet the latest ATEX standards.


RadEye G

Personal Dose Rate Meter

The RadEye G is a light-weight and very rugged instrument designed for quick and reliable measurement of gamma dose rates. Modern electronic circuitry guarantees excellent linearity over 6 decades of radiation intensity: from background level to 10 R/h - with overrange indication up to 1000 R/h. The RadEye G-10 version incorporates a different energy filter in order to achieve a Sievert response curve according to ambient equivalent dose rate H*(10).

The high-quality counter tube in conjunction with the non-metal instrument housing allows detection and reliable measurements down to very low gamma energies - a crucial feature in respect to accidents involving medical isotopes or Am-241 (a component of smoke detectors). The intelligent ratemeter algorithm (ADF mode) guarantees that even the smallest change in radiation rates will be displayed immediately, while coincidentally occurring fluctuations will be effectively suppressed.


  • Menu driven interface can be optimized to application

  • Large, clear, backlit display for error free readings

  • High range versions for high turn back levels greater than 10 R/h (100m Sv/h)

  • Intrinsically safe versions for potentially explosive environments

  • Large energy compensated GM tube for precise dose rate measurement of gamma and X-ray

  • High sensitivity to low energy gamma radiation in harsh environments


Energy-compensated Geiger-Mueller tube
Measurement Units
R and R/h
Measurement Ranges
50 µR/h to 10 R/h
up to 1000 R
Count Rate for Cs-137 (662keV)
Energy Range, according to IEC 60846-1


Overrange Indication
1000 R/h
Dimensions (HxWxD)
3.78 x 1.25 x 2.4 in. (9.6 x 3.1 x 6.1 cm)
6.6 oz. (160g)
Protection Degree
IP 65 according to EN 60529
ATEX Classification (Ex Versions Only)
II 2G Ex ia IIB T4 IBExU10ATEX1096
Battery type and life
2 AAA; 900 hours
Part Number (Black Label)
Part Number (Yellow Label)

Thermo RadEye G Personal Gamma Radiation Detector (Dosimeter Dose Rate Meter)