Doza RPOGRESS-GAMMA Руководство пользователя - Страница 4
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1.2.13 Gamma-spectrometer withstands sinusoidal vibrations in the frequency range from 10 to
55 Hz with displacement amplitude 0.35 mm.
1.2.14 Casings of the gamma-spectrometer ensure protection against penetration of solid
objects and water in accordance with the IP23.
1.2.15 Gamma-spectrometer is proof against electromagnetic interference in compliance with
the IEC 1000-4-8-93, IEC 1000-4-9-93, IEC 61000-3-2-95, IEC 610003-3-94, IEC 61000-4-2-95,
IEC 61000-4-3:2006, IEC 61000-4-4-95, IEC 61000-4-5-95, IEC 61000-4-6-96, IEC 61000-4-11-94,
IEC 61000-4-12-96, IEC 61000-4-13:2002, IEC 61000-4-14-99, IEC 61000-4-28-99, design group III,
performance criterion А.
Electromagnetic interference does not cause false triggering and restart of the measurement
channel.
1.2.16 With regard to seismic stability the gamma-spectrometer stability against earthquake
intensity 7 according to the MSK-64 scale at 30 m relative to the grade level.
1.2.17 With regard to protection against electric shock gamma-spectrometer is classified as
class I according to the IEC 61010-1:2001.
1.2.18 With regard to fire-prevention characteristics gamma-spectrometer complies with fire
probability of no more than 10
1.2.19 Gamma-spectrometer withstands the exposure to decontaminating solutions:
-
first solution - caustic soda 50 - 60 g/l, potassium permanganate 5 - 10 g/l;
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second solution - oxalic acid 20 - 40 g/l;
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third solution – detergents;
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5 % solution of the citric acid in the rectified ethyl alcohol for handling electronic devices.
1.2.20 Overall dimensions of the shielding SZG-1 .......................... diameter 275×677 mm.
1.2.21 Overall dimensions of the shielding SZG-3 .......................... diameter 310×700 mm.
1.2.22 Weight of the shielding SZG-1............................................................ 100 kg.
1.2.23 Weight of the shielding SZG-3............................................................. 110 kg.
1.3 Configuration
1.3.1 Gamma-spectrometer is a stationary unit with scintillation detector unit, personal
computer and software «Progress» intended for control in all modes of operation and all steps of the
measurement process, for processing of measurement data and recording results.
1.3.2 Gamma-spectrometer includes: scintillation detector unit based on sodium iodide crystal
NaI(Tl) of different dimensions, power supply unit and pulse amplifier, analog-to-digital converter
(ADC) and lead shielding block for shielding of natural background radiation. As a rule, power supply
units and pulse amplifiers as well as ADC are placed directly in the detector block. Different beakers
and dishes are used for measurement of counting samples.
1.3.3 Combined
for energy calibration and performing routing performance testing. The source represents a 1 L
Marinelli beaker.
1.4 Design and operation
1.4.1 Mode of operation of the gamma-spectrometer is based on acquisition of raw spectrum of
pulses from detector, which detects radiation emitted from the counting sample exposed under fixed
measurement conditions. Activity of a radionuclide in the sample is determined by means of
spectrogram processing in the personal computer using the «Progress» software.
1.4.2 The «Progress» software allows to control the gamma-spectrometer operation, analyze
spectrogram and identify radionuclides, determine activity of corresponding nuclides in the sample and
compute the measurement error and register measurement results.
-6
-1
year
.
137
40
Cs+
K calibration source comes with gamma-spectrometer which is used
FVKM.412131.002-03RE
4