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This operating manual (the OM) is intended to inform the user about principles of operation,
rules of application, maintenance, storage and shipping of the BDBG-09 detecting unit of gamma
radiation.
The OM contains the following abbreviations:
DER
- ambient dose equivalent rate
PC
- personal computer.
1 DESCRIPTION AND OPERATION
1.1 Purpose of use of the BDBG-09 detecting unit
The BDBG-09 detecting unit of gamma radiation (hereinafter called the detecting unit) is
designed to measure ambient dose equivalent rate
The detecting unit can be used as a part of computer-aided systems of radiation control.
1.2 Technical specifications
1.2.1 Key specifications are presented in the Table 1.1.
Table 1.1 – Key specifications of the detecting unit
1 Measurement range of gamma radiation
DER
2 Basic relative permissible error limit of
gamma radiation DER measurement with
0.95 confidence probability
3 Energy range of registered gamma radiation
4 Energy dependence of measurement results
of the detecting unit at gamma radiation DER
measurement in the energy range of
0.05 MeV to 1.25 MeV
5 Anisotropy of the detecting unit at gamma
quanta incidence at angles from +60
horizontally and vertically relative to the main
measurement direction, marked by a
"+" symbol , does not exceed:
Со isotopes
137
60
- for
Cs and
241
- for
Am isotope
Operating manual ВІСТ.418266.006-03 НЕ
Name
о
to - 60
H
*
of gamma radiation;
(
10
)
H
*
of gamma radiation (hereinafter DER).
(
10
)
Unit of
measurement
μSv/h
%
MeV
%
о
%
4
Standardized value
according to the
specifications
7
0.04– 10
H
*
15+2/
, where
(
10
)
is a numeric value of gamma
radiation DER in μSv/h
0.05 – 3.00
25
25
60
H
*
(
10
)
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