INFICON Composer Gas Concentration Controller - Manual (Page 113)

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Composer Operating Manual
MFC RANGE DIL . . . . . . . . . . . . . The parameter representing the full flow
range of the mass flow controller that
regulates the flow through the dilution
circuit (sccm).
MAX FLOW BUBBLER . . . . . . . . The parameter representing the maximum
flow desired through the bubbler (sccm).
This must be equal to or less than the MFC
RANGE BUBBLER parameter’s value.
MAX FLOW DIL . . . . . . . . . . . . . . The parameter representing the maximum
flow desired through the dilution (sccm).
This must be equal to or less than the MFC
RANGE DIL parameter’s value.
TOTAL FLOW. . . . . . . . . . . . . . . . The parameter representing the total flow
desired (sccm) from both the bubbler and
dilution flows.
USER # . . . . . . . . . . . . . . . . . . . . Indicators reserved for future features.
Visible only during Controller’s power up
sequence.
MIN FLOW (USER #3) . . . . . . . . . The parameter that sets the minimum
allowed flow of the bubbler MFC. It avoids
the erratic control that can take place due
to the MFC’s valve sticking at close.
MAX INPUT (USER #5) . . . . . . . . The parameter that sets the maximum
concentration represented by the full range
voltage applied to the Control In BNC.
Requires SW#4 CFGR2 to be active.
MIN INPUT (USER #6) . . . . . . . . . The parameter that sets the minimum flow
when 0 volts is applied to Control In.
Requires SW#4 CFGR2 to be active.
4.3.5.3 Optional - LCD Front Panel Description
The LCD style front panel, see Figure 4-4 , is composed of a power control and
display adjustment portion, a display portion, see section 4.3.5.2, Optional -
Composer LCD Display Description, on page 4-9 , and a portion for data entry
with a limited keyboard.
The power control and display adjustment portion is in the lower right corner
and consists of a push-push type mechanical power switch and associated
"power on" indicator which is illuminated green when the controller is connected
to a 24 volt power source, power is applied and the Controller’s Power Switch
is on. A small opening to the left of the “power on” indicator is used to provide
access to a variable potentiometer to maximize the view and contrast of the