SS 20.600 Ex
– Supplementary instructions for use in explosive atmospheres ATEX Page 7
5 Mounting instructions
Prior to the assembly in explosive atmospheres, the following safety
measures must be observed:
Check if the device category corresponds to the specified
zones.
Check if the operation approval of the operator is available.
Check if there is an explosive atmosphere during assembly,
maintenance, etc.
Compliance with the applicable regulations and the entire
relevant documentation for this device.
ATEX-relevant operating conditions
Pressure-tight accessories
Only use suitable, pressure-tight accessories if media separation
is required.
Observe the pressure safety measures.
Opening the housing
It is not allowed to open the housing (sealed housing screws).
Unauthorized opening of the housing renders the explosion pro-
tection null and void!
Remote version
The connecting cable between the sensor and the housing in-
cludes intrinsically safe circuits. It is already connected ex works
and must not be disconnected or modified in any way.
Mounting ground or equipotential bonding conductor
The metallic enclosure of the sensor must be connected to grounding or
equipotential bonding according to EN 60079-0.
The cable required for this must be fastened at the terminal screw of the
enclosure, for the remote version also at the sensor.
In general the following applies to grounding:
The external ground connection on the enclosure must be con-
nected to the equipotential bonding of the hazardous area with
low resistance.
No equipotential current must flow between the hazardous
area and non-hazardous area.
Minimum cable cross-section: 1 x 4 mm
2
The screw must be tightened firmly at the terminal so that the
conductor cannot be loosened or twisted.
