38 EL3060 CONTINUOUS GAS ANALYZERS | OI/EL3060-EN REV. A
Connecting the electrical leads – Safety information
CAUTION
Follow all applicable national safety regulations for the installation and
operation of the electrical apparatuses as well as the following safety in-
structions!
Equipotential bonding
The external equipotential bonding connections of the control unit and the
analyzer unit must be connected to the local potential equalization. The local
potential equalization must be connected before any other connections are
made. The capacity of terminals is of max. 4 mm
2
.
Risks of a disconnected equipotential bonding
The gas analyzer can be hazardous if the equipotential bonding is inter-
rupted inside or outside the device or if the equipotential bonding is dis-
connected. Carrying out work on the equipotential bonding or the equi-
potential bonding connection is prohibited if there is an explosion hazard.
Lay electrical lines in such a way that they are non-detachable
The electrical lines, including the connections between the analyzer unit and
the control unit, must be non-detachable.
Connecting cable of the EL3060-Uras26 analyzer unit
The non-detachable connecting cables for data transmission and the 24 V DC
supply are an integral component of the flameproof case of the analyzer unit.
In each case, they are 10 m long and may not be shortened to a length of less
than 1 m.
Shielded leads
Shielded leads must be led through the EMC screwed cable glands. The
braided shield must be placed on the EMC screwed cable glands.
Separate laying
Signal lines must be installed separately from the power supply lines. Analog
and digital signal lines must be laid separately from each other.
Unused screwed cable glands
Unused screwed cable glands must be sealed with sealing plugs. The cap
nuts on the unused screwed cable glands must be non-removable.
Before connecting the power supply
Before connecting the power supply, it must be ensured that the mains
voltage is in the permissible range 100 to 240 VAC for operation of the gas
analyzer.
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