AJAH.418266.007RE
4
For the description of data exchange registers in the DiBUS protocol see Appendix А.
1.2.11 Operating conditions:
-
operating temperature …………………………………..……………… minus 40 to +50 °C;
-
relative humidity …………..………………..……………..…………..…… 98 % at +35
C;
-
atmospheric pressure ………………………………….……………….… 84.0 to 106.7 kPa;
-
content of the corrosive agents in the ambient air corresponds to the values in table 1.1.
Table 1.1
Type of atmosphere
Designation
Description
Content of the corrosive agents
I
Relatively clean
Sulphur dioxide gas not more than 20 mg/(m
2
·day)
(not more than 0.025 mg/m
3
);
Chlorides not more than 0.3 mg/(m
2
·day)
II
Industrial
Sulphur dioxide gas not more than 20 to 250 mg/(m
2
·day)
(not more than 0.025 to 0.31 mg/m
3
);
Chlorides not more than 0.3 mg/(m
2
·day)
III
Maritime
Sulfur dioxide gas not more than 20 mg/(m
2
·day)
(not more than 0.025 mg/m
3
);
Chlorides – 30 to 300 mg/(m
2
·day).
1.2.12 Limits of complementary error of the AEDR of neutron radiation due to deviation of
temperature from normal value to the limiting values of operation conditions ………….…….. ±10 %.
1.2.13 Detectors withstand sinusoidal vibrations in the frequency range from 10 to 55 Hz with
displacement amplitude 0.35 mm.
1.2.14 Detectors are stable against seismic impacts with magnitude 7 according to the MSK-64
scale, being installed on the building structures of the industrial site at 70 to 30 m relative to the
grade level.
After the seismic impact with the above mentioned parameters detectors are operable within the
limits stated in sections 1.2.3, 1.2.10 during the whole life cycle under specified operation conditions.
1.2.15 Degree of protection provided by casings against ingress of solid items and water - IP65.
1.2.16 Detectors are stable against electromagnetic interference of 2 grade according to the
IEC 1000-4-8-93, IEC 1000-4-9-93, IEC 61000-4-2-95, IEC 61000-4-3:2006, IEC 61000-4-4:2004,
IEC 61000-4-5-95, IEC 61000-4-6-96, IEC 61000-4-12-95 and comply with the emission standards
stated by the CISPR 22:2006 for equipment of class A.
1.2.17 Detectors are stable against short (duration 5 minutes) overloads of the monitored
radiation with AEDR of neutron radiation 1 Sv·h
-1
. After overload the detectors are operable, basic
relative measurement error remains within limits stated in the 1.2.3.
1.2.18 Detectors are operable after exposure to gamma radiation with AEDR up to 10 Sv·h
-1
and 5 minutes duration.
1.2.19 Detectors are stable under conditions of background gamma radiation with AEDR up to
0.01 Sv·h
-1
.
Limits of complementary measurement error of AEDR under conditions of background gamma
radiation with AEDR up to 0.01 Sv·h
-1
relative to the measurement results at AEDR of neutron
radiation of 1.0 mSv·h
-1
– not more than ±10 %.
1.2.20 By its protection against electric shock detectors comply with the IEC 61010-1:2001.
1.2.21 Detectors are fire-safe products with fire probability of not more than 10
-6
year
-1
.
1.2.22 Detectors withstand the exposure to decontaminating solutions:
1) boric acid (H
3
BO
3
) – 16 g, sodium thiosulfate (Na
2
S
2
O
3
·5H
2
O) – 10 g, distilled water – up to
1 liter;
