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Model 12-4-7

The Model 12-4-7 is a neutron dose rate instrument that conforms to the RPG curve with a measuring range of 0 to 100 mSv/h (0 to 10,000 mrem/hr) from thermal to 12 MeV neutrons.

The detector is a 19.5 cm (7.7 in.), moderated 3He tube with a gamma background rejection up to 100 mSv/h (10 R/hr). The ratemeter is a four-decade analog meter, designed with a cast aluminum instrument housing incorporating a separate battery compartment, and accompanying metal handle. This design delivers industrial robustness and quality, promoting long-lasting protection and instrument life.

The front-panel controls include a rotary switch for selecting the four-decade range, instrument shut-off, and battery test; an audio on/off switch; a fast/slow response switch; a count reset; and high-voltage test push-button. The Model 12-4-7 is a complete turn-key system and includes two "D" cell batteries.

Features
  • Smaller, Lighter 7-inch Polyethylene Ball
  • Moderated Neutron Detector
  • Range: 0 to 100 mSv/h (0 to 10,000 mrem/hr)
  • Gamma Rejection up to 0.1 Sv/h (10 R/hr)
  • Rugged
  • 4-Range Analog Meter
  • Complete Turn-Key System
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