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General Survey Radiation Detector
for Alpha, Beta, Gamma and X- Rays |
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Monitor 4 & 4EC
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| One sievert is equivalent to 100 rem; one microsievert (0.000001 Sv) = 0.0001 rem = 0.1 mR |
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| Specifications Geiger Counter Model Monitor4 &4EC |
| Detector Monitor 4 | Halogen-quenched, uncompensated Geiger Muller tube with thin mica window, 1.5-2.0 mg/cm2 . Approx 1000 CPM.mR/hr for Cesium 137. |
| Detector Monitor 4EC | Halogen-quenched,
uncompensated Geiger Muller tube Sidewall with 2mm tin filter, 1.5-2.0
mg/cm2.
Approx
1000 CPM.mR/hr for Cesium 137. Energy compensation only effective through the sidewall |
| Display: | Analog meter CPM or Sievert |
| Accuracy: | ± 15% of full
scale (Referenced to Cs-137) |
| Energy Sensitivity | |
| Alpha | Detects alpha down to
2.5 meV. Typical detection efficiency at 3.6 meV is greater than 80% |
| Beta | Detects Beta at 50
KeV with typical 35% efficiency Detects Beta at 150 KeV with typical 75% efficiency |
| Gamma and X-ray | Detects Gamma and
X-rays down to 10 KeV through the window and 40 KeV maximum through the side wall Normal background is ~ 10-20 CPM, Gamma sensistity ~ 1000 CPM/mR/hr |
| EC Version | As
above except the energy response through the detector is flat within 61%
or - 26% over the range 40KeV to 100 KeV and within the range +35% or -17% over the range 100 KeV to 1.4 MeV (referenced to Cs-137) |
| Operating Range | CPM 0-500, 0 - 5000,
0 - 50,000 mR/hr - 0-0.5, 0- 5, 0- 50 mR/hr µSv/hr - 0- 500, )-50 mR/hr (optional scale) |
| Count Light | Red LED flashes with each radiation event. |
| Audio Indicator | Internally mounted beeper (can be switched off for silent operation). |
| Anti-Saturation | Meter will hold at full scale in fields as high as 100 times the maximum reading. |
| Power Requirements | One 9-volt alkaline battery. Battery life is min. 2000 hours at normal background radiation levels. |
| Temperature Range | -20ºC to 55ºC (-4ºF to 131ºF) |
| Weight | ~ 224 grams (8 oz.) without battery. |
| Size | 210 x 70 x 48 mm (8.25 x 2.75 x 1.875 in.). |
| Ordering Information |
| Model | ||
| Monitor 4 | Standard Monitor4: Includes carrying case, 1 year limited warranty and CE mark. (Batteries not included) | $389.00 |
| Monitor 4EC | Monitor4 EC energy compensated side wall detector, 2 mm tin filter | $430.00 |
| Monitor 4EC-USB | as above with Sievert-scale | $499.00 |
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Terms |
Topac Inc 231 CJC Highway, Cohasset MA 02025 USA
Tel: 781 740 8778 Fax: 781 740 8779 e-mail: sales@topac.com
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