Servomex SERVOTOUGH LaserExact 2950, Operator'S Manual

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SERVOTOUGH LaserExact Monitor, Operator Manual 02950001A_1
INSTALLATION
15
WARNING
The user must monitor the sample flow rate out from the measuring
cell. A fall in flow rate could indicate a gross leak of sample gas into
the LaserExact enclosure.
In the event of a suspected leak, ensure you follow all warnings regarding purging of
the sample system before inspecting the unit.
Figure 3-2: Purge connections
3.2.3 Laser module purge
A second purge system may also be fitted to the LaserExact monitor. This purge is
for measurement purposes only and is usually included for low level measurements
of gases such as O
2
and CO
2
. This purge is connected through a ¼” OD SS pipe on
the unit (see Figure 3.2) and is a high pressure Laser Module purge and requires a
purge pressure of 2bara.
Laser Module
Purge Inlet Purge Outlet
Alignment
Chamber
Purge Inlet
Blank Port