Gamma radiation warning light GRAETZ GammaFlash

  • GammaFlash is a lightweight, rugged, battery-powered dose rate warning device for the detection of gamma and X-rays in the Ḣ*(10) ambient dose equivalent rate measurand.
  • Detector: Geiger-Müller counter tube with energy filter
  • It has a fixed warning threshold that triggers a visual and audible alarm when exceeded
  • The audible alarm can be acknowledged via a pushbutton on the housing perimeter
  • Below the preset warning threshold, the GammaFlash indicates the functional readiness and battery status via a red LED
  • By changing the blinking frequency of the optical single pulse display, an increase or decrease of the dose rate is indicated
  • Customized warning threshold between 7.5 µSv/h and 10 mSv/h can be implemented ex works
  • Easy to operate even with firefighter gloves on
  • The plastic housing is jet-proof, oil and petrol resistant
  • Thanks to a built-in magnet, the gamma radiation warning light can be attached to suitable metal surfaces if required
  • Possibility of individual labeling of the housing cover

Notice:

  • In the firefighter version, the GammaFlash is preset to the dose rate warning threshold of 25 µSv/h for determining the limit of a hazardous area
Datasheet
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The Gamma radiation warning light GRAETZ GammaFlash is used to determine and set up exclusion zones when a specified local dose rate of gamma and X-ray radiation is detected. Exceeding the specified warning threshold is clearly indicated visually and acoustically. With its extremely compact and robust design, as well as a magnetic bottom – for attaching the device to metallic surfaces – this dose rate warning device is particularly suitable for use by fire departments, civil defense and disaster control forces.

  • Easy to operate, even with firefighter gloves on
  • Clear visual and audible alarm when the set warning threshold of the local dose rate is exceeded
  • Dust and splash protection as well as protection against short-term immersion in water (protection class IP67)
  • Oil and petrol resistant
  • Magnetic back for attachment to metal surfaces
  • Individualization of the housing with own logo or lettering possible

 

Technical Data

Measuring range Dose rate 1 µSv/h ≤ Ḣ*(10) ≤ 40 mSv/h
Overload capacity 1 Sv/h
Energy sector 40 keV – 1.3 MeV
Dose rate warning thresholds 1
Desired warning threshold can be ordered ex works in the range of 7.5 µSv/h – 10 mSv/h. Fire department: 25 µSv/h
Dimensions Ø 86 x 54 mm
Weight (incl. batteries) approx. 250 g
Protection class IP65 (Protected against water jets)

 

Individualization

  • For other applications, a customer-specific warning threshold between 7.5 μSv/h and 10 mSv/h can also be implemented ex works on request.
  • Individual labeling of the housing cover possible on request.
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