Fluke Biomedical 943-27 Detector - Manual (Page 6)

943-27 Beta Scintillation Detector
Operator Manual
1-2
1.3 Specifications
General specifications for the Model 943-27 Detector are listed below. The 943-27 series products are
designed for nuclear applications, and any repairs to it by personnel not qualified to ANSI 45.2.6 1978,
Skill Level II may void the nuclear rating.
If a problem develops, the preamplifier may either be returned to the factory for service, or repaired by a
qualified technician.
Table 1-2. General Specifications for the 943-27 Detector
Feature: Specification:
Radiation Detected Beta rays
End Window
Titanium, 1.125 in dia. x 0.0002 in thick, designed to maximize beta
transmission and minimize noble gas adsorption
Scintillation Crystal
Calcium Fluoride, CaF
2
(Eu)
1.125 in dia. X 0.005 in thick interfaced to 1.125 in dia. x 0.125 in thick
quartz light pipe
Detector Housing Stainless Steel
Detector Constant
1.0 x 10
-3
uCi/cc/picoampere, typical, based on calibration method and
sampling geometry
Detector Range
1.0 x 10 -12 to 1.0 x 10-4 amperes (approximately 1.0 x 10 -3 to 1.0 x 10 5
uCi/cc, based on calibration method and sampling geometry
Energy Dependence
and Efficiency Dependent on sampling geometry; Refer to Appendix C for applicable
isotopic calibration reports
Power Requirements (-) 500 VDC @ 400 uAmperes
Operating Temperature 0° F to 122 °F (-16 °C to 50 °C)
Relative Humidity 0 – 95 %, non-condensing
Operating Pressure 12 psig max
Dimensions 1.5 in dia. x 9.0 in long (3.8 cm x 22.9 cm)
Weight 3 lbs (1.4 kg)
Preamplifier Interface
High Voltage: Six (6) foot coaxial cable with pre-terminated SHV connector
and “Seal Grip”;
Signal: Six (6) foot coaxial cable with pre-terminated BNC connector and
“Seal Grip”;
Modification
Information
None