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Configuration 5
in this configuration (Figure 10), pump P1 draws gas in through the supply
inlet on the back panel and delivers it to accumulator AC1. The accumulator
smoothes out flow fluctuations generated by the pumping action and provides
a port for releasing pump backpressure through pressure relief valve RV1, set at
5 psig. The tee at the output of the accumulator splits the supply into carrier and
dilution streams, each of which is plumbed to a back-panel outlet port which
must be plugged if an external supply is used. These ports can be connected
individually through external scrubbing media (filters, driers, etc.) or simply
looped to their respective inlet ports. Filters F1 and F2 remove particulates
larger than 5 microns from these two streams.
MAIN PUMP
SUPPLY
INLET
DILUTION
OUTLET
BYPASS
LOOP
DILUTION
INLET
CARRIER
OUTLET
BYPASS
LOOP
CARRIER
INLET
Figure 10: Diagram of Configuration 5
ACCUMULATOR
AC1
P1
FILTER
F1
FILTER
F2
Advanced Theory of Operation
BACK PRESSURE
REGULATOR
BPR1
TEE
DILUTION
STREAM
CARRIER
STREAM
31
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