VICI 500 Dynacalibrator - Manual (Page 29)


Plumbing Configurations
There are two plumbing configurations available for Model 500 Dynacalibrators.
The plumbing configuration is defined by the first digit of the 2-digit numerical
suffix to the basic model number, e.g., Model 500-12 is equipped with plumbing
configuration 1. The second digit of the 2-digit suffix defines the overall instru-
ment gas flow capacity. A lower case letter is added to 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, such as the dilution
flowmeter, are rated for the different flow capacities. 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 6) 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.
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Configuration 
Figure 7 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 factory-set
line regulator for the carrier and dilution stream paths.
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Figure 6: Diagram of configuration 0
Figure 7: Diagram of configuration 1