RKI Instruments GX-2009 Data Logger Management Program - Manual (Page 45)

Viewing, Printing, Exporting, and Deleting Data in the Data Window • 45
you want to view.
Interval Trend Data
Average gas concentrations over the user defined interval trend
time are logged in the interval trend data files. The interval trend
time is set using the GX-2009 User Setup Program. See the
GX-2009 User Setup Program Operator’s Manual for
instructions to set the interval trend time. Events such as gas
alarms or sensor failures are saved in the interval trend data file
when they occur.
An interval trend data file is created and saved in the GX-2009
when the instrument is turned off. The serial number, user ID,
and station ID that are entered in the instrument when it is
turned on are saved for the corresponding interval trend file. If
the instrument’s serial number, user ID, or station ID are
changed using the GX-2009 User Setup Program, any interval
trend files that result from subsequent operating sessions will
have the new serial number, user ID, or station ID saved in
them.
The data may be viewed either in table format or graph format if
at least 5 scheduled data points have been logged at the
programmed interval trend time. This does not include events. If
an interval data file has fewer than five scheduled data points,
the graph controls are not functional and the data cannot be
graphed.