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Home  /   Test Instruments  /  Leak, Radiation

Monitor 4 Handheld Radiation Alert Detector

Monitor 4 Handheld Radiation Alert Detector

Item Number: 22168
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Unit Price: $445.00
Compare At: $360.00
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DETAILED DESCRIPTION

S.E.International Monitor 4-Handheld l Radiation Alert® Detector

  a ß Y X

 

The MONITOR 4 is a compact, general purpose 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.  Gamma sensitivity is typical of a pancake G-M detector: 1000 CPM/mR/hr (referenced to Cs-137).
 

Monitor 4 Survey Meter Specifications:

Detector
Monitor 4: Halogen-quenched uncompensated GM tube with thin mica window 1.5-2.0 mg/cm2 thick.

Display
Analog Meter Scale. 

Monitor 4 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.
Normal background is approximately 10-20 CPM.


Gamma Sensitivity:
 

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.

Operating Range

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
±15% of full scale (referenced to Cs-137)

S.E. International Monitor 4 Response Curve

Energy Response Curvey for the Monitor 4 Pancake G-M survey meter


 

Audio
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 up to 2,000 hours at normal background radiation levels
Temperature Range
-20° C to 55° C (-4° F to 131° F).
Weight
M4: 178 grams (6.3 oz.) without battery
Size
145 x 72 x 38 mm (5.7 x 2.8 x 1.5 in.)
Warranty
1 year limited warranty




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