GENEQ > Environnement > Radiation – Moniteurs
| Appareil portatif de surveillance et d'alerte aux radiations |
Same Monitor 4. New ergonomic design.
The M4 and M4EC are compact, 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) |
| Specifications |
| Detector |
Monitor 4: Halogen-quenched uncompensated
GM tube with thin mica window 1.5-2.0 mg/cm2 thick. Monitor 4EC: Halogen-quenched
GM tube, energy compensated sidewall 2mm tin filter. Thin mica window
1.5-2.0 mg/cm2 thick. |
| Display |
| Analog Meter holds full scale in fields as high as 100X max reading. |
| Operating Range |
| 0-50 mR/hr and 0-500, 0-5,000, 0-50,000 CPM or 0-500 µSv/hr |
| Monitor 4 Energy Sensitivity |
M4: Detects alpha
down to 2.5 MeV; typical detection efficiency at 3.6 MeV > 80%. Detects
beta at 50 keV with 35% efficiency. Detects beta at 150 keV with 75% efficiency.
Detects gamma and x-rays down to 10 keV through the window, 40 keV minimum
through the sidewall. Normal background is approximately 10-20 CPM. M4EC: is 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. |
| Range Switch |
| X1, X10, X100. |
| Accuracy |
| ±15% of full scale (referenced to Cs-137) |
| Gamma Sensitivity: | Operating Range |
|
1000 CPM/mR/hr (referenced to Cs-137) Energy Sensitivity for the 4EC is 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. |
0-.5, 0-5, 0-50 mR/hr
0-500, 0-5,000, 0-50,000 CPM or 0-500 µSv/hr 0-50 mR/hr. |
| Range Switch | |
| X1, X10, X100, Battery Check. | |
| Accuracy | |
| Typically ±15% of reading (referenced to Cs-137) |
| Monitor 4 | Monitor 4EC |
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| Audio Internally mounted beeper (can be turned off for silent operation). Power Requirements 9-volt alkaline battery up to 2,000 hrs at normal background Temperature Range -20° C to 55° C (-4° F to 131° F). Weight M4: 223.9 grams (7.9 oz) without battery M4EC: 245.7 grams (8.7 oz) without battery Outputs 1/8 inch headphone jack with pulse out. Size 210 x 70 x 48 mm (8.25 x 2.75 x 1.875 in.) Accessories Carrying Case, Observer Software, USB Option, SI Meter Option Warranty 1 year limited warranty Monitor 4 Kits Build your own Monitor 4! Learn about how a geiger counter works! |
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| Accessories | |
Carrying Case |
Observer Software |
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| Support | |
| Monitor 4 & 4EC Operation Manual | |
| Cat. No. | Description |
| SEMONITOR4 | Monitor 4 |
| SEMONIT4EC | Monitor 4 EC |
| SEMONIT4USB | Monitor 4 USB, includes USB Cable and Observer Sofware |
| SEMONIT4ECUSB | Monitor 4 EC USB, includes USB Cable and Observer Software |