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Table 1.2 – Key specifications of the BDKS-01 combined detecting unit of
gamma, beta radiation (hereinafter referred to as BG Probe)
Name
Measurement range of photon-
ionizing radiation DER
Indication range of pulse count
rate from gamma radiation
detector
Main relative permissible error
limit during photon-ionizing
radiation DER measurement at
137
Cs calibration with 0.95
confidence probability
Energy range of recorded photon-
ionizing radiation
Anisotropy in a solid angle of
60
0
relative to the basic
direction of measurement, marked
by "+" symbol, not more than:
137
- for
Cs and
241
- for
Am radionuclide
Additional relative permissible
error limit during measurement of
photon-ionizing radiation DER
caused by deviation of
environmental temperature from
о
С in the temperature variation
20
range from –30
Operating mode setup time while
the BG probe is exposed to
photon-ionizing radiation with
DER equal to 5 µSv/h, not more
than
Operating mode setup time when
measuring surface beta-particles
flux density and surface activity of
beta-emitting radionuclides, not
more than
Measurement range of surface
beta-particles flux density
60
Co radionuclides;
о
о
С to +55
С
Measurement
unit
μSv/h
cps
%
MeV
%
%
min
min
×min)
2
part./(cm
7
Standardized value
according to the
specification
– 10
-1
7
10
0 – 9999
15+2/
,
H 10
(
)
where
H 10
(
)
is a dimensionless
quantity, numerically
equal to DER value
measured in μSv/h
0.05 – 3.00
25
60
5
о
С
per each 10
deviation from 20
1
1
10 – 200 000
–
о
С
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