Kobold PSE series, Руководство по эксплуатации

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PSR/PSE
PSR/PSE K23/0322 page 9
equipment in question, which is issued by a body designated for explosion
protection.
a) The voltage of the supply units must be less than or equal to the voltage Ui
of the flow monitor.
b) The total current Io of the supply devices must be less than or equal to the
current Ii of the flow monitor.
c) The ignition limit curves from EN 60079-11 must be taken into account in
Zone 2 without a safety factor and must be observed during installation. In
Zone 1, the safety factor 1.5 must be used. A control drawing (system
description) to be created by the installer / operator is required for the
installation of the intrinsically safe circuit.
d) Equipotential bonding must be established along the intrinsically safe
circuit if the power is supplied via an earthed source.
q) The certificates must be taken into account, including the special conditions
stipulated therein.
r) Within the potentially explosive area, assembly may only be carried out in
accordance with the locally applicable installation regulations. The following
conditions must be observed (incomplete):
a) Installation and maintenance may only be carried out in an explosion-free
atmosphere and in compliance with the regulations applicable in the
country of the operator.
b) Additional precautions must be taken if the presence of hydrogen sulfide,
ethylene oxide and / or carbon monoxide is to be expected: These
substances have a very low ignition energy!
c) If these substances are present and if a substance of explosion group IIC
is present and an explosive atmosphere is likely to be present, only non-
sparking tools may be used!
d) The flow monitors must not be used in systems with cathodic corrosion
protection; in borderline cases, consult the manufacturer.
a) Particular care must be taken to ensure that no stray currents (e.g.
generated by motors that are operated on frequency converters,
welding systems and / or cathodic corrosion protection systems) are
passed through the flow monitor.
6.4. Maintenance, servicing
Definition of terms according to IEC 60079-17:
Maintenance and repair: A combination of all activities that are carried out to
keep an object in a condition or to bring it back into a condition that meets the
requirements of the relevant specification and ensures the execution of the
required functions.
Inspection: An activity that involves the careful examination of an object with the
aim of making a reliable statement about the condition of this object, without
dismantling or, if necessary, with partial dismantling, supplemented by measures
such as B. measurements is carried out.