Siemens ULTRAMAT 6F Operating Instructions Manual page 9

2.2.4.3 Analyzer versions Ex nR with restricted breathing enclosure
In analyzers with a restricted breathing enclosure (type of protection Ex nR), only sample gases may be connected whose
composition is below the lower explosion limit (LEL).
The introduction of combustible to occasionally explosive gas mixtures is not permitted with this type of explosion protection!
The connections for the protective gas (purging gas) must be closed gas-tight!
2.2.4.4 Pressurized analyzers Ex pz for use in hazardous Zone 2
Combustible gases or gas/air mixtures whose composition is also occasionally above the lower explosion limit (LEL) may not
be connected to analyzers with simplified pressurized enclosures (protection rating Ex pz). Gases may only be connected to
the sample gas path pursuant to the hazardous Zone 1 definition if the analyzer is fitted with a px purging unit.
The introduction of gas mixtures that are frequently or always explosive is not permitted with this type of explosion
protection!
The connections for the protective gas must be closed gas-tight if protective gas is not used for the corresponding part of the
analyzer.
2.2.4.5 Ex tc analyzer versions with dust protection by enclosure
Only sample gases whose composition is below the lower explosion limit (LEL) may be connected to analyzers with dust
protection by enclosure (protection rating Ex tc).
The introduction of combustible to occasionally explosive gas mixtures is not permitted with this type of explosion protection!
The connections for the protective gas must be closed gas-tight!
3 Assembly/installation
3.1 Safety information
3.1.1 General
WARNING
Exceeded maximum permissible operating pressure
Risk of injury or poisoning.
The maximum permissible operating pressure depends on the device version, pressure limit and temperature rating. The
device can be damaged if the operating pressure is exceeded. Hot, toxic and corrosive process media could be released.
Ensure that maximum permissible operating pressure of the device is not exceeded. Refer to the information on the
nameplate and/or in Technical specifications (Page 37).
WARNING
Wetted parts unsuitable for the process media
Danger of injury or damage to device.
Hot, toxic and corrosive media could be released if the process medium is unsuitable for the wetted parts.
Ensure that the material of the device parts wetted by the process medium is suitable for the medium. Refer to the
•
information in "Technical data".
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
A5E45779389002-01, 09/2018
9