INFICON Composer Gas Concentration Controller - Manual (Page 116)

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Composer Operating Manual
NOTE: Holding the C key during a
"power on" will unlock parameters if they
have been locked by the monitor
software. Holding the C key for a
second cycle will set all parameters to
their default settings.
0-9 . . . . . . . . . . . . . . . . . . . . . . . . . Pressing these keys in the program mode
will enter into the display buffer the
appropriate decimal value. Should more
digits be entered than the parameter
requires, only the most current keystrokes
will be retained.
4.3.5.3.2 Alternate Functions
When the display is in the operate mode, the numeric keypad has an alternate
function which is indicated by words or letters printed around the periphery of
the keypad.
START. . . . . . . . . . . . . . . . . . . . . . (Concentration Control only.) Pressing this
key will place the instrument into the
CONTROL state and consequently initiates
operation of the control loop to maintain the
measured concentration at the
CONCENTRATION TARGET parameter’s
value. Illuminates the display’s CONTROL
state indicator.
HOLD . . . . . . . . . . . . . . . . . . . . . . (Concentration Control only.) Pressing this
key places the instrument into the HOLD
state which maintains the bubbler flow (and
dilution flow if so configured) at the value(s)
current at the time of the actuation.
Illuminates the display’s HOLD state
indicator.
BYPASS . . . . . . . . . . . . . . . . . . . . (Concentration Control only.) Pressing this
key places the instrument into the BYPASS
state which diverts all flow through the
dilution circuit, reducing the bubbler
circuit’s flow to zero. Illuminates the
display’s BYPASS state indicator.
A . . . . . . . . . . . . . . . . . . . . . . . . . . Concentration Control configuration:
Pressing this key will temporarily convert
the numerical display’s function to showing
the drive level (0, 6, 12 dB) and amplifier
range (1-5)