4 connections to the reactor – INFICON Composer Gas Concentration Controller User Manual
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Composer Operating Manual
1.10.4 Connections to the Reactor
When integrating this Instrument System there are three basic levels of
integration to the Reactor.
As a Monitor, where the measured concentration is either automatically
recorded or just visually observed. Any adjustments to the system is either
manually executed or the Reactor’s controller makes the adjustments
based on user or OEM supplied algorithms.
As a Concentration Controller, where the Instrument System measures
concentration (mole fraction) and then makes small adjustments to the flow
(the Manipulated Variable) to maintain the target concentration without
manual intervention. In addition, the reactor’s flow may be maintained at a
constant total flow (bubbler flow plus dilution flow equals constant total
flow). This feature is set by enabling SW#5 on CFGR2; see
.
As a Bulk Flow (Flux) Controller, where the instrument in addition to
measuring mole fraction has an input that reads the flow through the
bubbler’s MFC and controls the Bulk Flow. This feature requires the Analog
I/O Option Card and is set by enabling SW#8 on CFGR2. See
for detailed operating and set-up instructions.
Optionally, the wire harness, Bulk Flow Control Installation Kit (IPN
600-1149-P1) may be purchased to facilitate integration.