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Analog Radiation Detector Monitor 4

Catalog Number:
Monitor 4
Availability: In stock
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S.E. INTERNATIONAL, INC.

MONITOR 4 (mR/hr standard, uSv/hr meter scale upon request)

The Monitor 4 is compact, analog radiation detector. A general purpose survey meter capable of detecting alpha, beta, gamma, and x-rays over 3 selectable ranges. Proven and reliable over decades of use in the industry, the Monitor 4 has evolved into one of the best analog radiation detectors of today. Simple and ergonomic , a red count light flashes and a beep sounds with each count detected. Battery check and silent operation with the flick of your thumb.

Applications & Uses: Checking industrial gauges, such as moisture, density, or level gauges containing Cesium-137, Locating Sources, Personal protection, General surveying

 

Features

Detector: Halogen-quenched uncompensated GM tube with thin mica window 1.5-2.0 mg/cm2 thick. Effective diameter of window is 9.1 mm (.36 in.).

Operating Range: 

  • 0-.5, 0-5, 0-50 mR/hr
  • 0-500, 0-5,000, 0-50,000 CPM
  • or 0-5, 0-50, 0-500 μSv/hr (SI Scale Meter Option)

Range Switch: X1, X10, X100, Battery Check.

Accuracy: Typically ±15% from factory, ±10% with NIST Source Calibration (referenced to Cs-137)

Energy Sensitivity: 1000 CPM/mR/hr (Cs137).

  • Detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV is greater than 80%.
  • Detects beta at 50 keV with typical 35% detection efficiency.
  • Detects beta at 150 keV with 75% typical detection efficiency.
  • Detects gamma and x-rays down to 10 keV typical through the window, 40 keV minimum through the sidewall of the detector.

Display: Analog Meter holds full scale in fields as high as 100X maximum reading. CPM & mR/hr scale. Optional SI Scale Meter Available

Audio: Internally mounted beeper (can be switched off for silent operation).

Outouts: 3.5 mm jack with pulse out.

Power Requirements: One 9-volt alkaline battery. Battery life is up to 2,000 hours at normal background radiation levels

Temperature Range: -10° to +50°C (14° to 122°F)

Weight: M4: 200 g (7.1 oz) M4EC: 224 g (7.9 oz)

Size: 209 x 71 x 50 mm (8.2 x 2.8 x 1.9 in.)

 

 

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