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SE International Monitor 4 Handheld Radiation Alert Detector

Item #:
MONITOR-4
Brand:
SE International
$415.00
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SE International Monitor 4 Handheld Radiation Alert Detector

SE International Monitor 4 Handheld Radiation Alert Detector

$415.00

Monitor 4 Handheld Radiation Alert Detector by SE International

The M4 and M4EC are compact, ergonomic, general purpose survey meters 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. The Monitor 4EC offers a more linear reading for gamma and x-rays (above 40 keV).Click here for Original Monitor 4. Click here for USB Model.

Both Detect beta at 50 keV with typical 35% detection efficiency and beta at 150 keV with typical 75% detection efficiency.

Monitor 4:


Detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV is greater than 80%. Detects gamma and x-rays down to 10 keV typical through the window, 40 keV minimum through the case.

Monitor 4EC:


Detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV is greater than 80%. Detects gamma and x-rays down to 10 keV typical through the window (non-compensated), 40 keV through the sidewall.
Detector Monitor 4: 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.).
Monitor 4EC: Halogen-quenched GM tube, energy compensated sidewall 2mm tin filter. Thin mica window 1.5-2.0 mg/cm2 thick. Effective diameter of window is 9.1 mm (.36 in.).
Display Analog Meter holds full scale in fields as high as 100X maximum reading. CPM & mR/hr scale. Optional SI Scale Meter Available
Energy Sensitivity 1000 CPM/mR/hr (Cs137). 4EC is the same as M4 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.
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% of reading (Cs137)
Audio Indicator Internally mounted beeper (can be turned off for silent operation)
Power Requirements 9-volt alkaline battery. Approx. 2,000 hrs. at normal background
Temperature Range -20° to 55°C (-4° to 131°F)
Weight M4: 200 g (7.1 oz)
M4EC: 224 g (7.9 oz)
Outputs 3.5 mm headphone jack with pulse out
Size 209 x 71 x 50 mm (8.2 x 2.8 x 1.9 in.)
Includes Carrying Case w/ Belt Clip
Options SI Meter Option, Observer Software, Mini-USB Option w/ USB Observer Software
Limited Warranty 1 year limited warranty
Monitor 4 Kits Build your own Monitor 4! Learn about how a geiger counter works!

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