Ludlum Measurements 44-213, Руководство пользователя

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Model 44-213 FIDLER Technical Manual
Section 1
Ludlum Measurements, Inc. Page 1-1 September 2019
Introduction
he Ludlum Model 44-213 detector is used primarily for the detection of low-energy gamma
radiation from approximately 10 keV to 200 keV. The word “FIDLER” is an acronym for Field
Instrument for the Detection of Low Energy Radiation.
The detector consists of a 12.7 cm (5 in.) diameter by 1.2 mm (0.05 in.) thick Csl scintillator
coupled to a photomultiplier tube, with aluminum housing. The window area is approximately
127 cm
2
and is covered by 10.6 mg/cm
2
metallized polyester. It features a black protective cap to
protect the thin window when the detector is not being used.
Compatible instruments for use by this detector provide detector high voltage of 500-1200 Vdc
and input sensitivity of approximately -10 mV.
The optional handle (part # 4574-066) is adjustable and ergonomic, allowing the user to easily
scan while keeping the detector up to 30.5 cm (12 in.) above the floor or ground.
Model 44-213 FIDLER
Section
1
T