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.
The Monitor 4EC is an energy compensated, ergonomic radiation survey meter 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 linear response for gamma and x-rays (above 40 keV).
| Monitor 4 | Monitor 4EC | |
| Detector: | Halogen-quenched uncompensated GM tube with thin mica window 1.5 - 2.0 mg/cm2 thick. Effective diameter of window is 0.36" (9.1 mm). | Halogen-quenched GM tube, energy compensated sidewall 2mm thin filter. Thin mica window 1.5 - 2.0 mg/cm2 thick. Effective diameter of window is 0.36" (9.1 mm). |
| Operating Range: | 0 - 0.5: 0-5, 0-50 mR/hr 0-500, 0-5,000, 0-50,000 CPM 0 - 5: 0-50, 0-500 μSv/hr (SI Scale Meter Option) |
0 - 0.5: 0-5, 0-50 mR/hr 0-500, 0-5,000, 0-50,000 CPM 0 - 5: 0-50, 0-500 μSv/hr (SI Scale Meter Option) |
| 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 and beta at 150 keV with typical 75% detection efficiency. Detects gamma and x-rays down to 10 keV typical through the window, 40 keV minimum through the case. | 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 and beta at 150 keV with typical 75% detection efficiency. Detects gamma and x-rays down to 10 keV typical through the window (non-compensated), 40 keV through the sidewall. |
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| Accuracy: | ± 15% of reading (Cs137) | ± 15% of reading (Cs137) |
| Display: | Analog Meter holds full scale in fields as high as 100X maximum reading. CPM & mR/hr scale. Optional SI Scale Meter Available | Analog Meter holds full scale in fields as high as 100X maximum reading. CPM & mR/hr scale. Optional SI Scale Meter Available |
| Audio Indicator: | Internally mounted beeper (can be turned off for silent operation). | Internally mounted beeper (can be turned off for silent operation). |
| Outputs: | 3.5 mm jack with pulse out. | 3.5 mm jack with pulse out. |
| Power Requirements: | 9 Volt alkaline battery (included). Approx. 2,000 hrs. at normal background | 9 Volt alkaline battery (included). Approx. 2,000 hrs. at normal background |
| Temperature Range: | 14° to 122°F (-10° to 50°C) | 14° to 122°F (-10° to 50°C) |
| Humidity: | 10% to 70% Non-Condensing | 10% to 70% Non-Condensing |
| Weight: | 7.1 oz. (200 g) | 7.9 oz. (224 g) |
| Dimensions: | 8.2" x 2.8" x 1.9" (209 x 71 x 50 mm) | 8.2" x 2.8" x 1.9" (209 x 71 x 50 mm) |
| Description | Part # | Saved | Price | Select Option | Add to |
|---|---|---|---|---|---|
| SE International Monitor 4 Survey Meter (mR/hr standard. μSv/hr meter scale upon request) | RS-SE-MONITOR-4 |
|
$455.00 $445.00 | ||
| SE International Monitor 4EC Survey Meter (mR/hr standard. μSv/hr meter scale upon request) | RS-SE-MONITOR-4EC |
|
$485.00 $475.00 | ||
| N.I.S.T calibration with the initial purchase of a Radiation Alert Series Handheld Digital Detectors | RS-SE-CAL |
|
$70.00 | ||
| N.I.S.T re-calibration service on Radiation Alert Series Handheld Digital Detectors (only 7-14 day turnaround) | RS-SE-RECAL |
|
$98.00 | ||
