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Hitachi

Healthcare

MAR-781 & MAR-782

This instrument is the area monitor that measures the gamma dose rate in the working environment. Equipped with large LED display and loud buzzer alarm function, it is easy to see and hear the measurements from people nearby. Moreover, it is small and light weight enough to easily carry around.

Features

  • For facilities using Gamma
  • Two models, high-sensitivity and wide-range
  • Available to suit specific target dose rate
  • For facilities using Gamma
  • Two models, high-sensitivity and wide-range, available to suit specific target dose rate
  • Large display
  • Equipped with alarm and external signal output
  • Belt and wall-mounting fixtures provided

Specifications

  MAR-781 (high-sensitivity type) MAR-782 (wide-range type)
Radiation detected Gamma, X-ray
Detector Silicon semiconductor
Measurement energy range Approx. 50 keV to 6 MeV
Accuracy Within ±10% (1 to 999.9 μSv/h)
±1 digit (0.1 to 0.9μSv/h)
Reference 137Cs
Within ±10% (0.01 to 99.99mSv/h)
±1 digit (0.001 to 0.009mSv/h)
Reference 137Cs
Counting system Digital rate meter method, Moving average method
Alarm display output Red LED lights up and buzzer turns on.
Numerical indication blinks
No-voltage contact output
Data output Conforms to RS-422, RS-232C, or current loop communication
(RS-422 output set at the factory. For RS-232C or current loop communication, internal wiring changed on request.)
Analog output 0.1 to 1,000μSv/h, 4-decade log scale
0 to 1 VDC output
0.001 to 100mSv/h, 5-decade log scale
0 to 1 VDC output
Detector extension (Optional) Up to 40 m using extension cable
Environmental requirements in operation Temperature : 0 to +40 degrees C
Humidity : 90%RH or less (Non-condensing)
Power 100VAC or 6 VDC
* Battery-operated model (MAR-783) is available. Please contact us for further details.
100VAC or 6 VDC
* Battery-operated model (MAR-784) is available. Please contact us for further details.
Dimensions Approx. (W) 300 x (D) 55 x (H) 250 mm
Weight Approx. 2.3 kg

This website includes information intended for healthcare professionals.
Please note that all descriptions in this website conform to the Pharmaceutical and Medical Device Act in Japan as well as other laws and regulations in Japan. Model names, specifications and configurations of products in overseas market outside Japan may be different by the countries.