INFICON Composer Gas Concentration Controller - Manual (Page 163)

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Composer Operating Manual
Calibration Set User Zero Sets instrument zero. Should be done only
when pure carrier gas is flowing at steady
operating pressure. Available only in Amplitude
Track Mode and only when the sensor
temperature has reached set point,
concentration readings are stable and bubbler
MFC Min flow parameter is zero.
section 8.3.8
on page 8-22 . Exercise extreme caution in
using this feature.
CAUTION
Do not press Set User Zero during processing
because the composition calculation will be offset by
an amount equal to the measured composition at the
time Set User Zero was pressed. The instrument
sensitivity may also be affected.
Use Factory Zero Sets instrument back to default factory zero.
Available only in Amplitude Track Mode.
Exercise extreme caution in using this feature.
Help User’s Guide Opens hypertext enabled Users’ Guide.
About Clicking this button shows the version number
of software as well the version number of
firmware in the Composer. See
section 8.3.14
on page 8-28 .
Table 8-2 Menu Bar Functions (continued)
Menu Sub-menu Function