Scintillation Dose Rate Meter NIS 295B

MILITARY U.K. (different makers for same model)

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  • Year
  • 1973 ?
  • Category
  • Military Equipment (not Re, Tr or RXT)
  • Radiomuseum.org ID
  • 294828

 Technical Specifications

  • Number of Tubes
  • 1
  • Number of Transistors
  • 8
  • Semiconductors
  • Main principle
  • Crystal or Solid State Detector with Amplifer
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries / 12 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Scintillation Dose Rate Meter NIS 295B - MILITARY U.K. different makers
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 320 x 220 x 150 mm / 12.6 x 8.7 x 5.9 inch
  • Notes

  • The NIS295B uses a plastic scintillator coupled to a photomultiplier and a dynamic
    EHT (Extra High Tension) supply to detect gamma ray radiation. A photomultiplier has gain exponentially proportional to applied EHT and this is used to obtain the instrument's logarithmic law. Feedback adjusts the EHT supply until the photomultiplier produces a current equal to a reference current. The EHT control voltage then drives the (linear) analogue meter that has a logarithmic scale. With the plastic cap removed from the detector, beta radiation can also be detected.

    The NIS295B uses an EMI 9804A Photomultiplier tube, which is similar to
    the lower sensitivity EMI 9757B tube. The range is 0,5 microSievert up to 5000 microSievert. It also features an audio output for recorder or radiation signal analyzer.

  • Net weight (2.2 lb = 1 kg)
  • 4.5 kg / 9 lb 14.6 oz (9.912 lb)
  • Author
  • Model page created by Emilio Focosi. See "Data change" for further contributors.

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The model Scintillation Dose Rate Meter is part of the collections of the following members.

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