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The MONITOR 5’s large thin window GM detector located
on the back of the instrument allows the user full
view of the meter and count light while checking for
contamination. The larger window provides good reproducibility
and extra sensitivity to alpha, beta, low energy gamma
and x-rays.
Specifications
Detector:
Halogen-quenched uncompensated GM tube with thin
mica window 1.5-2.0 mg/cm2 areal density. The diameter
of the window is 1.13 in./28.58 mm.
Energy Sensitivity:
Referenced to Co-60, gamma sensitivity is 25 counts
per second per 1 mR/hr. Recommended
I-125 detection is for .5 mCi and up. Smallest detectable
level of I-125 is approx. 0.02 mCi. Typical detection
efficiencies compared to 4 pi counter.
SOURCE ENERGY EFFICIENCY
C-14 (.163 mCi) 156 keV b max .07 %
Bi-210 (.016 mCi) 1.16 MeV 20 %
Sr-90 (.035 mCi) 5.46 keV & 18 %
1.2 MeV b max
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Optional CPM Meter Face |
Accuracy:
15% of full scale (referenced to Cs-137).
Range Switch:
X1, X10, X100, Battery Check.
Anti-Saturation:
Meter will hold at full scale in fields as high
as 100
times the maximum reading.
Audio Indicator:
Internally mounted beeper.
(can be switched off for silent operation).
Operating Voltage:
7-11 volt DC. High and low Voltage fully regulated.
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:
240.5 grams (8.5 oz) without battery.
Size:
145 x 72 x 38 mm (5.7 x 2.8 x 1.5 in.).
Warranty:
1 year limited warranty.
Carrying case included:
Padded vinyl with belt clip and wrist strap
Accessories
Support
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