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