RKI Instruments Eagle 2 - Manual (Page 49)

Viewing, Printing, Exporting, and Deleting Data in the Data Window • 45
session and on the zoom factor. Depending on the length
of the data session, data sessions that show changing
readings will normally have more choices for zoom levels
than sessions that show stable data to allow for viewing of
gas reading changes in greater detail.
• When selected, the Event feature shows on the graph
where each channel went into and out of alarm and at
what concentration each event occurred.
• When selected, the Cursor feature allows you to display
the gas reading and log time for each data point saved on
the graph. The number of data points on the graph is
minimized depending on the length of a data session by
several means including omitting consecutive data points
that have the same gas readings. As you use the left and
right arrow buttons on your keyboard to move the cursor
across the graph horizontally, readings at specific log
times are displayed. Use the up and down arrows on the
keyboard to move the readings up or down on the screen.
• The catalytic combustible channel can be graphed in
%LEL, ppm, or %volume units. While readings can be
recorded in any of these units and stored in the same file,
those readings may only be graphed in one unit at a time.
If %LEL is chosen as the unit, any ppm or %volume data is
converted and graphed as %LEL. The user may change
back and forth between the units for the graph and still
have all data shown. The CAT Range Select box is where
the user may select %LEL, ppm, or % volume as the units
for the graph. The box just to the right of the selection dots
shows what channel the catalytic combustible detector is
associated with and what color it is displayed in on the
graph. In the example below, the catalytic combustible