SS500/SS2000 Analyzer
4–2 4900002285 rev. B 3-25-20
About the SCS
SpectraSensors offers two types of sample conditioning systems; a full-
featured SCS (as shown in Table 4–1 on page 4–3), and a simplified sample
system (as shown in Figure 4–2).
In the full-featured sample system, sample gas enters the sample conditioning
system at the specified supply pressure set by an upstream regulator via the
sample supply port. The sample passes through a shut-off valve, pressure
regulator that maintains constant pressure in the measurement cell, and
membrane separator where any liquid in the stream is removed. Liquid
removed by the membrane separator passes through the bypass loop and
collects in a filter housing. A continuous flow, set to the specified level by a
metering valve with an integrated flow meter, not only flushes the liquid from
the membrane separator, but also maintains flow through the sample lines.
In the simplified sample system, sample gas enters the sample conditioning
system via the sample supply port inlet. The sample flows directly through the
membrane separator where any liquid in the stream is removed. Pressure
control and shut-off valves must be installed separately, upstream of the
analyzer. Liquid removed by the membrane separator passes through the
bypass loop. Part of the gas flow travels through the bypass to flush the liquid
from the membrane separator. The bypass flow is controlled by a metering
valve.
The flow exiting the bypass loop and the flow exiting the measurement cell is
sent out to be vented to a safe location.
The system drawings and schematics found in Appendix A of this
manual are for illustration purposes only. Always refer to the
system drawings for your specific system configuration and
specifications.
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