VICI 450 Dynacalibrator - Manual (Page 32)

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this number to indicate the carrier flow (and the orifice used). Refer to page 4 for
information about the available flow capacity ranges.
Many of the plumbing components of the Dynacalibrator are rated for the dif-
ferent flow capacities; such as the main pump, the dilution flowmeter, etc. The
following discussion disregards these differences and describes the basic flow
through the unit in relative terms.
Configuration 0
The plumbing configuration designated “0” (Figure 9) consists of a single input
port, an integral micron filter/pressure regulator assembly, and a tee. Dry gas (air,
nitrogen, etc.) at the appropriate pressure is supplied by the user to the supply
inlet on the back panel. Particulates larger than 30 microns are removed by filter
F1. Line regulator PR1 is set at the factory to deliver 10 psig gas to the working
parts of the instruments. The output of PR1 is split by the tee into the carrier and
dilution stream paths.
SUPPLY
INLET
FILTER
F1
DILUTION STREAM
CARRIER STREAM
LINE REGULATOR
PR1
TEE
Configuration 1
Figure 10 shows plumbing configuration 1. Each line – carrier and dilution –
contains its own input port and an integral micron filter/pressure regulator
assembly. User-supplied gas is filtered and regulated down to 10 psig by
the fac tory-set line regulator for the carrier and dilution stream paths.
Advanced Theory of Operation
DILUTION
INLET
FILTER
F1
DILUTION
STREAM
LINE REGULATOR
PR1
CARRIER
INLET
FILTER
F2
CARRIER
STREAM
LINE REGULATOR
PR2
Figure 9: Diagram of configuration 0
Figure 10: Diagram of configuration 1