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Model 44-142
Beta Scintillation Detector
Part Number: 47-3161
Specifications
Options
Documents
Replacement Parts
Specifications
Options
Documents
Replacement Parts
Specifications
Indicated Use
Beta survey
Detector Type
0.25 mm (0.01 in.) thick plastic scintillator
Window
1.2 mg/cm
2
metalized polyester
Window Area
Active:
100 cm
2
(15.5 in
2
)
Open:
88 cm
2
(13.6 in
2
)
Protective Screen
0.76 mm (0.03 in.) thick stainless steel, 6.5 mm (0.26 in.) square openings, 88% open
Outer Dimensions (L x W): 168 x 92 mm (6.6 x 3.6 in.)
Efficiency (4π)
99
Tc:
20%
90
Sr/
90
Y:
30%
14
C:
4%
Typical Background
(10 µR/hr field)
300 cpm or less
Detector Uniformity
within 10% of average reading
Gamma Sensitivity
approx. 20 cpm per µR/hr (
137
Cs)
Dead Time
typically 5 µs or less
Photomultiplier Tube
29 mm (1.125 in.) diameter; magnetically shielded
Operating Voltage
typically 500 to 1200 V (1500 V max.)
Temperature Range
-20 to 50 °C (-4 to 122 °F)
Environmental Rating
IP rating of 63
Connector
Series "C" (others available)
Construction
Aluminum with beige powder coating
Size (H x W x L)
6.4 x 9.5 x 31.1 cm (2.5 x 3.8 x 12.3 in)
Weight
0.5 kg (1 lb)
Options
Protective Screens
Description
Thickness
Openings
% Open
Part Number
Protective Screen
(standard)
0.79 mm (0.031 in.)
6.5 mm (0.26 in.) square
88%
7393-171
Protective Screen
0.79 mm (0.031 in.)
4 mm (0.16 in.) square
81%
7393-209
Protective Screen
0.79 mm (0.031 in.)
4.8 mm (0.19 in.) hex
83.5%
7393-208
Protective Screen
0.51 mm (0.02 in.)
6.5 mm (0.26 in.) square
88%
7393-138
Protective Screen with Mesh
0.85 mm (0.0335 in.)
Screen:
6.5 mm (0.26 in.) square
Mesh:
Fine stainless steel mesh
69%
2393-381
Face Ring with Mesh
(should be paired with one of the screens above)
Mesh:
0.064 mm (0.0025 in.)
Fine stainless steel mesh
78%
2393-345
Option
Description
Part Number
Model 180-15-3
Sample holder for max. 5.1 x 1.5 cm (2 x 0.6 in.) [D x L] samples.
47-3865
Documents
Data Sheet
Manual
Detector Clips
Replacement Parts
Description
Part Number
Mylar Window Assembly
4393-149
Related Products
Model 44-1
Model 44-116
Model 43-65-1
Model 44-215
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