Polimaster PM1621, Руководство по эксплуатации

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7
8 The dosimeter provides inputting, storage in a non-volatile memory and continuous
control of two DER and DE threshold levels within the whole measurement range, various
audible alarms, as well as vibro and light alarms (additionally for
РМ1621М, РМ1621МА)
at exceeding of the preset first and second threshold levels.
Discreteness of threshold level setting
Unit of lower-order indicated position
9 Registered energy range 10 keV
– 20 МeV
Energy response relative to
0.662 MeV (
137
Cs), no more than
30%
10 Coefficient of variation (deviation of the
dosimeter’s readings caused by statistic
fluctuations) at DER measurement at a
confidence coefficient 0,95, no more
than
10%
11 Anisotropy (type dependence is given in Attachment A) of the Dosimeter for each
energy does not exceed values (in %) presented in Table 1.2, when the Dosimeter is
rotated in the horizontal plane (Attachment B, figure B.1) and values (in %) presented in
Table 1.3, when the Dosimeter is rotated in the vertical plane (Attachment B, figure B.2).
Table 1.2
Angle of detection relative to
the direction of graduation,
Energy of gamma radiation, MeV
Anisotropy
0.059 0.662 1.25
0 0 0 0
15
± 5 ± 5 ± 5
30
10 10 10
45
± 20 ± 15 ± 15
60
± 40 ± 20 ± 20
-15
± 5 ± 5 ± 5
-30
± 10 ± 10 ± 10
-45
± 20 ± 15 ± 15
-60
± 40 ± 20 ± 20
Table 1.3
Angle of detection relative to
the direction of graduation,
Energy of gamma radiation, MeV
Anisotropy
0.059 0.662 1.25
0 0 0 0
15
± 5 ± 5 ± 5
30
10 10 10
45
± 20 ± 15 ± 15
60
± 40 ± 20 ± 20
-15
± 5 ± 5 ± 5
-30
± 10 ± 10 ± 10
-45
± 20 ± 15 ± 15
-60
± 40 ± 20 ± 20
12
Maximum permissible additional relative
error
of DER measurement:
- at temperature variations from minus
40 to plus 60
С
10%
- at relative humidity of ambient air 98 %
at 35
° С
10%
- at power voltage variations from
nominal value to limiting voltage values
5%