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1.2 Technical Specifications
1.2.1 Key specifications are presented in Tables 1.1 – 1.3.
Table 1.1 – Key specifications of the control unit of the MKS-UM dosimeter-
radiometer (hereinafter the control unit)
Name
Measurement
unit
Standardized value
according to the
specification
Measurement range of photon-
ionizing radiation DER
μSv/h
10
-1
– 10
6
Indication range of pulse count rate
from gamma radiation detector
cps 0 – 9999
Measurement range of photon-
ionizing radiation DE
mSv 0.001 to 9 999
Main relative permissible error limit
during 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
Main relative permissible error limit
during DE measurement at
137
Cs
calibration with 0.95 confidence
probability
% 15
Energy range of recorded photon-
ionizing radiation
MeV 0.05 – 3.00
Energy dependence during photon-
ionizing radiation DER and DE
measurement in the energy range
from 0.05 MeV to 1.25 MeV, relative
to 0.662 MeV energy, not more than
%
± 30
Anisotropy in the 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
Measurement range of DE
accumulation time
1 min – 9999 hrs