4 using the applications, 1 amplitude track mode, 2 sweep mode – INFICON Composer Gas Concentration Controller User Manual
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Composer Operating Manual
8.2.3.4 Using the Applications
Both applications are primarily used in the Amplitude Track mode for real time
monitoring and control of precursor concentration. The Monitor software may
also be used in Sweep mode as a diagnostic tool. These two principal functions
will be briefly described.
8.2.3.4.1 Amplitude Track Mode
The Amplitude Track mode is the default operating mode of the instrument
system. In this mode the resonance of the gas is tracked and converted into
composition data. From the menu bar select Actions >> Resume Collection
to begin monitoring process. See
for details.
Before running your process, a baseline frequency must be established with
pure carrier gas. If running in dilution control mode, select the Actions >>
Bypass item from the menu bar. Once the sensor has been collecting data long
enough to stabilize at the desired temperature, click the Calibration >> Set
User Zero button. This frequency will be used in subsequent calculation of the
precursor concentration. This button should not be pressed at any other time
as it will cause offset errors in the composition calculation.
8.2.3.4.2 Sweep Mode
The Sweep mode is not available in Setup Tool. This mode is used to provide
information about the shape and amplitude of the resonance peak. In this mode
the sensor sweeps through a frequency range starting at the user provided
initial frequency in steps defined by the step size. Selecting Mode >> Sweep
will bring up the relevant window. For details, see
.