Servomex 07931001B, Operator'S Manual

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07931001B revision 6 © Servomex Group Limited. 2020
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Process flanges
The Laser 3 Plus attaches to process flanges that must be welded either to the
relevant process pipework, duct or furnace wall or, for pipework up to 150 mm (6 ")
in diameter, to a spool piece supplied by Servomex.
The user can attach the laser analyzer mounting assemblies (fixed or adjustable) to
the process flange either directly with appropriate gaskets, or via an isolation valve
or an isolation window, depending on your application. If your process is corrosive,
toxic or flammable, you must use isolation valves that are mechanically and
chemically compatible with the process. When these valves are closed, you can
easily remove the analyzer from the installation for maintenance procedures without
stopping the process.
Always wear the appropriate PPE to minimize the risk of burns.
The maximum process pressures for the Laser 3 Plus are listed in
Section 2.6.6. For installations based in the European Union, in all
applications operating above the maximum process pressures, the
Pressure Equipment Directive (PED) applies and an appropriate
isolation flange must be fitted.
Install and use the isolation flanges in accordance with their
manufacturer’s instructions.
If the process gas temperature is greater than 135 °C (275 °F), make
sure that you provide adequate thermal isolation to ensure that the
maximum temperature reached by the process flange to which the
Laser 3 Plus is fixed does not exceed 135 °C (275 °F).
When using thermal spacers, do not exceed a maximum torque of 25
Nm for fixing bolts, otherwise damage may occur to the spacer.
Hint: Servomex can provide thermal spacers for a range of flange sizes.
It is important that the process flanges are aligned correctly as they are
critical to ensuring the successful alignment and maximum
transmission of the Laser 3 Plus.
Avoid installing near reflective surfaces, particularly those found within
the process. Stray or reflected light entering the analyzer can impact
its performance.
The Laser 3 Plus
requires 2 holes of at least 25 mm (1”) in diameter to be cut
diametrically opposite to each other in order to enable the laser beam to pass
through the process gas.