INFICON Composer Gas Concentration Controller - Manual (Page 107)

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Composer Operating Manual
4.3.5.2.2 State Indicators
STOP . . . . . . . . . . . . . . . . . . . . . . Illuminates when the instrument’s current
state is STOP. All flows are zero in
Concentration Control.
♦ Means the Reactor is in control if Bulk
Flow configuration is selected.
HOLD . . . . . . . . . . . . . . . . . . . . . . Illuminates when the instrument’s current
state is HOLD. Flow outputs stay at the last
(10 second average) flows output from the
state just exited.
BYPASS . . . . . . . . . . . . . . . . . . . . Illuminates when the instrument’s current
state is BYPASS. Flow is 100% through the
Dilution circuit.
CONTROL . . . . . . . . . . . . . . . . . . Illuminates when the instrument’s current
state is CONTROL. Flows are
automatically adjusted to maintain Target
Concentration in a closed loop manner.
Flow is automatically conserved if the
“Conserve Flow” configuration switch is set
SWEEP . . . . . . . . . . . . . . . . . . . . Illuminates the numerical display when the
instrument’s current state is sweep. This
diagnostic state is only accessible through
the optional Monitor Software.
MANUAL . . . . . . . . . . . . . . . . . . . All state indicators are missing. Flows may
be set manually from the Set Up Tool or
optional Monitor Software.
CONTROL - WARNING . . . . . . . . A specialized state that the instrument
automatically enters when errors
(non-fatal) are encountered. The
instrument, upon encountering certain
errors dealing with the loss of signal or
poor peak shape, transitions into a state
which is like Hold, but will automatically
return to the Control state if the error can
be corrected.