Radiation Detection

Monitor 4 and Monitor 4EC

The Monitor 4 and Monitor 4EC are compact, general purpose survey metres capable of detecting alpha, beta, gamma, and x-rays over 3 selectable ranges. A red count light flashes and a beep sounds with each event detected.

  • Monitor 4EC offers a more accurate linear reading for gamma and x-rays (above 40 keV)
  • One 9-volt alkaline battery
  • Temperature range: -20°C to 55°C (-4°F to 131°F)

Specifications

MONITOR 4: Halogen-quenched uncompensated GM tube with thin mica windor 1.5-2.0 mg/cm2 thick

ENERGY SENSITIVITY: 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

MONITOR 4EC: Halogen-quenched GM tube, energy compensated sidewall 2 mm tin filter; thin mica window 1.5-2.0 mg/cm2 thick

ENERGY SENSITIVITY: the same as Monitor 4 except the energy response for gamma and x-rays through the detector sidewall is flat within +61% or -26% over the range of 40 keV to 100 keV, and within +35% or -17% over the range of 100 keV to 1.3 MeV

Part Numbers

IYG104 MONITOR 4, RADIATION MONITOR Buy Online
IYG104EC SAME AS ABOVE, ENERGY COMPENSATED Buy Online
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