INFICON Composer Gas Concentration Controller - Manual (Page 78)

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Composer Operating Manual
3.1.13.5 Programming the Controller’s Parameters (Bulk Flow)
When operating in the “Bulk Flow Control” configuration, the following list of
parameters must be entered. See
section 4.3.5.2.7 on page 4-15 for a complete
description of each parameter and section 4.3.5.3 on page 4-17 (all sections)
for a description of the display’s operation.
3.1.13.5.1 List of Parameters used for Describing the Bulk Flow
Control Configuration
PROG # . . . . . . . . . . . . . . . . . . . . . Numerical indication of program number
(1-9).
Concentration Target . . . . . . . . . . . Parameter that is used by the Composer to
internally multiply the CF setpoint (as read
by the composer on the Control In
connector) and thereby form the Bulk Flow
Target. See
section 3.1.13.6 on page 3-18
for help in setting this parameter. (0.000 to
100.00%)
Process Gain . . . . . . . . . . . . . . . . . Set parameter’s value per section
3.1.13.6.1 on page 3-18 .
Dead Time . . . . . . . . . . . . . . . . . . . Initially set to 2 seconds, do not set less
than 1.0 second. Actual time will depend on
delays in MFC read-back.
Time Constant . . . . . . . . . . . . . . . . Set to 1 second
Relay Limit. . . . . . . . . . . . . . . . . . . Units are sccm in Bulk flow configuration
Fuzzy Y/N
Cell Temperature
Carrier MW
Carrier γ
Precursor MW
Precursor γ
MFC Range, Bubbler
Max Flow Bubbler