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Ion Chamber Area Monitor

For use in and around nuclear reactors, hot cells, irradiators, and other facilities handling radioactive materials or x-ray equipment

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For use in and around nuclear reactors, hot cells, irradiators, and other facilities handling radioactive materials or x-ray equipment.

TA’s FM-9W Area Monitor Series are rugged and ideal for either laboratory or industrial application. AC Operation.
These versatile radiation control instruments fill a varied list of applications and placement needs.
The FM-9W Area Monitor Series utilize a variety of probes including Technical Associates P & S series, Geiger, and Scintillation. The many choices in probes provide instrumentation will fit your need. User settable to preferred engineering units: mR/h; Sv/h, cpm, etc.

Item Numbers
5250-0149 Ion Chamber Area Monitor

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  • Single or multi-detector system
  • Single read out serves multiple detectors
  • Detects beta, gamma, X-Ray- Optional Neutrons
  • Plug in modular system
  • Built in data logger
  • Wall mount case
  • Highly sensitive
  • Local or remote monitoring
  • User settable A / V alarm
  • USB & Ethernet ports
  • Relay control can lock doors, trigger a siren or send alert

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  • Range Sensitivity: Beta 0.1 – 10,000 mR/h; 5 Decades is Standard,; Other ranges available up to 5 Decades; Down to 0.15 MeV; Energy independent (±25%) 0.4 KeV to 7 MeV. Gamma 0.1 – 10,000 mR/h; Down to 2 KeV;Energy independent (±15%) 4 KeV to 6 MeV.
  • Operating range between -30°C and 65°C; drift less than -0.4% per°C at room temperature. 0-
    95% humidity non-condensing.
  • Detector: Air equivalent ion chamber. Standard systems use Model IC-2 (for Gamma) or Model
    IC-1 (for Beta-Gamma).
  • Both models have graphite lined phenolic walls and an active free air volume of 2 liters.
  • Optional high range systems use smaller chambers. Detector is supplied with 8 ft. cable (up to
    500 ft. of cable can be supplied as an option).

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Electronics Specification

  • Engineering Units: User can input correct conversion factor and change to any units.
  • Controls: Front Panel: On-Off, Alarm-mute, Rate, Integrate, Reset.
  • Recessed or Internal: Discriminator level, high voltage. Other adjustable settings: See calibration.
  • Input Sensitivity: Adjustable from less than 1 millivolt to 100 millivolt
  • Anti-saturation and Dead-time Corrections are available.
  • Alarm: 2000 Hz audio tone with audio “mute” switch + RED LIGHT
  • High current relay. 0-100% of full scale.
  • Alarm Set Point: User settable to any point on detector range.
  • Serial Output: Two way USB standard, Ethernet optional.
  • Power: 105-125 volts, 50-60 Hz (220 V optional)
  • Construction: Gasketed aluminum case.

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Detector Specifications

  • Probe Holder: Probe Holder is provided for probe purchased.
  • Any GM (such as P-13, P-15, P-6LB, etc.) or Alpha, Beta, Gamma or Neutron Scintillator (such as PAS-8, PAS-9, PGS-3, PNS-19, etc.).

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  • Dimensions: 13.5 w x 11″ h x 3.6″ d (25 x 18 x 10 cm), exluding probe holder, feet, and knobs
  • Weight: 3 lbs. (1.4 kg), including batteries and hardware, excluding probe

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