ABB LS4000 Operating Instructions Manual - Preparing For Installation
LS4000, LS4060 DIODE LASER ANALYZERS | OI/LS4000/O2-EN REV. A
53
Preparing for installation
Topic Page
Explosion protection ........................................................................................... 53
Preparing the system .......................................................................................... 54
Preparing the installation site ........................................................................... 55
Process purging .................................................................................................... 57
Laying out tools, installation materials and support materials .................. 58
Determining cable runs and line runs ............................................................... 59
Explosion protection
Use the name plates to check whether the following components have the
necessary explosion protection for the site:
Transmitter unit
Receiver unit
Junction box
If …
then …
all components have the necessary explo-
sion protection
all components can be installed.
at least one of the components does not
have the required explosion protection
the component in question must
not be installed.
The General Purpose variant may be used for measuring a flammable gas
mixture, i.e. the laser beam may pass through a flammable gas mixture, if the
following conditions are met:
The laser beam must never pass through an explosive gas mixture.
The gas analyzer must be de-energized when an explosive gas mixture is
present.
When the laser beam shall pass through an explosive gas mixture, an explo-
sion-proof variant of the gas analyzer with type test certificate must be used.
Checking the
explosion protection
Measuring of
flammable and
explosive gas
mixtures