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Model 43-68
Alpha-Beta Detector
Part Number: 47-2005
Specifications
Suggested Instruments
Options
Documents
Replacement Parts
Specifications
Suggested Instruments
Options
Documents
Replacement Parts
Specifications
Indicated Use
Alpha-beta survey
Detector Type
Rechargable gas proportional
Recommended Counting Gas
P-10 (10% methane, 90% argon)
Gas Recharge
Will operate on static charge for at least 15 hours with 1 m (39 in.) cable; 5-hour static charge if connected to a simultaneous alpha/beta measuring instrument
Window
0.8 mg/cm
2
metalized polyester (other thicknesses available)
Window Area
Active:
126 cm
2
(19.5 in
2
)
Open:
100 cm
2
(15.6 in
2
)
Efficiency (4π)
239
Pu:
20%
14
C:
15%
99
Tc:
30%
90
Sr/
90
Y:
20%
Gamma:
< 1%
Simultaneous Alpha-Beta Counting
239
Pu:
17.5%
99
Tc:
20%
90
Sr/
90
Y:
20%
Typical Background
(10 µR/hr field)
Alpha:
≤ 3 cpm when operating at alpha-only plateau region
Beta-Gamma:
350 cpm
Operating Voltage
Alpha:
1100 to 1400 V (typical)
Beta-Gamma:
1600 to 1800 V (typical)
Counter Threshold Setting
2 to 5 mV (typical)
Gas Connectors
double-end quick disconnect
Size (H x W x L)
10 x 11.7 x 19.8 cm (3.9 x 4.6 x 7.8 in.) with handle
Weight
0.9 kg (2 lb)
Suggested Instruments
Model
Description
Part Number
Model 3002
Digital Survey Meter
For alpha-beta counting
Stores up to 1000 data points
48-4037
Model 12
Analog Survey Meter
48-1609
Model 16
Analog Survey Meter
Adjustable window
48-1612
Model 18
Analog Survey Meter
Adjustable window
3 detector setups
48-1613
Model 2000
Scaler
Scaler Range: 0 to 999,999 counts
Timer: 0 to 999 minutes
48-1648
Model 2200
Scaler-Ratemeter
Scaler Range: 0 to 999,999 counts
Ratemeter Range: 0 to 500,000 cpm
Timer: 0 to 999 minutes
Adjustable window
48-1651
Model 2221
Analog Scaler-Ratemeter with Digital LCD
Single channel analysis
48-2065
Model 2224-1
Analog Scaler-Ratemeter with Digital LCD
Simultaneous alpha-beta counting
48-2679
Model 2241-2
Digital Scaler-Ratemeter
Auto-ranging
RS-232 port
2 detector setups
48-2731
Model 2350-1
Digital Datalogging Meter
Stores 1000 data points
Supports 16 detector setups
48-2751
Model 2360
Analog Datalogging Meter with Digital Scaler LCD
Simultaneous alpha-beta measurements
Stores 550 data points
48-2872
Options
Option
Description
Part Number
Model 2750
Gas flow control box
48-2146
2-Stage Gas Regulator
Gas regulator
2310017
Model T-1031
Gas flow time control
48-2472
Documents
Data Sheet
Manual
Replacement Parts
Description
Part Number
Window Assembly
4342-097
Electrode Wire
21-9741
Quick Disconnect Gas Fittings for Gas Proportional Detectors - Hose End
13-7912
Quick Disconnect Gas Fittings for Gas Proportional Detectors - Probe End
13-7920
Protective Screen
7342-157
Related Products
Model 43-143-1
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