INFICON Composer Gas Concentration Controller - Manual (Page 171)

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Composer Operating Manual
Dead Time: (s) . . . . . . . . . . . . . . . A numeric data field representing the
process dead time. This parameter accepts
numbers from 0.01 to 1000.0 (seconds).
Time Constant: (s) . . . . . . . . . . . A numeric data field representing the
process time constant. This parameter
accepts numbers from 0.01 to 1000.0
(seconds).
Loop Type . . . . . . . . . . . . . . . . . . Select a full function PID (Proportional
Integral Differential) or Fuzzy logic control
loop.
8.3.5.7 Miscellaneous
Concentration Target: . . . . . . . . . A numeric data field representing the
concentration of the gas flowing through
the Transducer. This parameter is relevant
when the instrument is in the Bulk Flow
Control mode. It is used to multiply the flow
read from the CONTROL IN connector to
produce the Bulk Flow target. This
parameter accepts numbers from 0.0000 to
100.0.
Relay Limit: (%). . . . . . . . . . . . . . A numeric data field representing the range
(single sided) of measured concentrations
that will satisfy the lighting of the
CONCENTRATION lamp on the
Controller’s front panel and closing the @
concentration relay on the SYSTEM I/O
connector. This parameter accepts
numbers from 0 to 100.0 (%).
Transducer Temperature: . . . . . . A numeric data field representing the
desired operating temperature for the
Transducer’s resonant Chamber. The
Transducer can be heated for use in
systems with heated lines. The
temperature of the cell is controlled to a
maximum of 65
°C. Normal temperature
excursions are ± 0.01 °C or less. This
parameter accepts values from 0.1 to 65.0
(
°C).