Kobold DSS -11, Руководство по эксплуатации, Страница: 12 / 36

DSS
Page 12 DSS K08/0322
f) Heat radiation from foreign products / components must also be
considered.
g) The reed switch must be protected against inadmissible access of
liquids and / or soiling.
h) Fixed parts (e.g. due to frost or corrosion) must not be loosened by
force in the presence of an explosive atmosphere. Icing must
therefore be avoided.
i) The reed switch may only be subjected to minor vibrations, see also
IEC 34-14.
j) To ensure the discharge of electrostatic charges, the national
requirements must be considered.
k) In particular, isolated capacities must be prevented.
l) Only those zener barriers or switching amplifiers may be used
whose output circuits are approved / tested for use in potentially
explosive atmospheres. In Europe, use in Zones 1/21 requires an
EC type-examination certificate for the equipment concerned issued
by a body designated for explosion protection.
m) The voltage of the supply units must be less than or equal to the
voltage Ui of the reed switch.
n) The total current Io of the supply units must be less than or equal to
the current Ii of the reed switch.
o) For the installation of the intrinsically safe circuit, a control drawing
(system description) to be created by the installer / operator is
required.
p) Equipotential bonding must be established along the intrinsically
safe circuit when using a grounded supply.
q) The certificates must be taken into account, including the special
conditions specified therein.
r) Resistant parts of the product (e.g. due to frost or corrosion) must
not be forcibly loosened in the presence of an explosive
atmosphere.
s) Within the potentially explosive area, installation may only be
carried out taking into account the locally applicable installation
regulations. The following conditions must be observed
(incomplete):
t) Installation and maintenance may only be carried out in an
explosion-free atmosphere and in compliance with the regulations in
force in the country of the operator.
u) Additional precautions must be taken if the presence of hydrogen
sulphide, ethylene oxide and / or carbon monoxide is to be
expected: these substances have very low ignition energy!
v) In the presence of these substances and in the presence of a
substance of the explosion group IIC and in the case of presumably
existing potentially explosive atmosphere, only spark-free tools may
be used!