Assembly Guidelines; Further Assembly Instructions For Devices With Ex Nr Or Ex Tc Protection - Siemens 7MB2531 Operating Instructions Manual

Assembly/installation
3.1 Safety information
Potentially explosive atmosphere
Do not open, service or repair the device in an area in which a potentially explosive atmosphere
may be present.
3.1.2.1

Assembly guidelines

Installing the devices
Install the explosion-proof analyzer and - if required - the Ex px safety equipment at a location
free from vibrations. Protect the devices from direct sunlight.
• Secure the analyzer and the Ex px safety equipment (if applicable) in accordance with your
dimensional drawings, and connect them as shown in the diagrams in Section Connections
of the field devices (Page 30).
A dimensional drawing of the analyzer can be found in Section Dimensions for preparing
installation (Page 21), the dimensional drawing of the Ex p safety equipment in the
associated description.
Exhaust lines
Make sure that the minimum internal diameter and the length of the protective gas exhaust lines
are dimensioned such that a pressure of 165 hPa is not exceeded inside the enclosure and that
the volume flow of the protective gas is at least 1 l/min.
Protection from impact energy
Make sure that the device has sufficient protection from impact energy of over 2 Joules in the
area of the windows.
3.1.2.2

Further assembly instructions for devices with Ex nR or Ex tc protection

• Note that all cables must be secured in place!
• Close the protective gas (purging gas) nozzles gas-tight!
20
WARNING
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Compact Operating Instructions, 09/2018, A5E45779389002-01