VICI 340 Dynacalibrator - Manual (Page 33)

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Configuration 2
Pump P1 (Figure 7) draws gas in through the supply inlet on the back panel
and delivers it to accumulator AC1. The accumulator smoothes out flow fluctua-
tions generated by the pumping action and provides a port for releasing pump
backpressure through pressure relief valve RV1, set at 5 psig. The output of the
accumulator is passed through 5-micron filter F1, and split by the tee into carrier
and dilution streams.
Advanced Theory of Operation
Figure 7: Diagram of Configuration 2
Configuration 3
In this configuration (Figure 8), 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 output of the accumulator is passed through filter F1, which removes
particulates larger than 5 microns. The tee at the output of the filter splits the
supply into carrier and dilution streams. The carrier stream is plumbed to the
carrier outlet on the back panel, which must be plugged if an external carrier
supply is used. This port can be connected through external scrubbing media
(filters, driers, etc.) or simply looped to the carrier inlet port. Filter F2 removes
particulates larger than 5 microns from the carrier stream. The dilution stream
output of the tee is simply passed through F1, a 5 micron filter.
Configuration 4
Input configuration 4 is shown in Figure 9. Pump P1 draws gas in through
the supply inlet on the back panel and delivers it to accumu lator 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 output of the accumulator is passed through filter
F2, which removes particulates larger than 5 microns. The tee at the output of
the filter splits the supply into carrier and dilution streams. The dilution stream is
plumbed to the back panel dilution outlet, which must be plugged if an external
dilution supply is used. This port can be connected through external scrubbing
media (filters, driers, etc.) or simply looped to the dilution inlet port. Filter F1
removes particulates larger than 5 microns from the dilution stream. The carrier
stream output of the tee is passed through 5-micron filter F2.
SUPPLY
INLET
DILUTION
STREAM
CARRIER
STREAM
FILTER
F1
TEE
MAIN PUMP
P1
ACCUMULATOR
AC1
BACK PRESSURE
REGULATOR
BPR1