RKI Instruments SDM-E2 - Manual (Page 133)

Logs Button • 128
• If installed, an infrared methane or hydrocarbon channel records data in
%LEL and/or % volume units depending on whether the channel is
configured as a % LEL channel or a %LEL/% volume autoranging channel.
When viewing the interval trend data in table format, the units are displayed
as the unit the reading was recorded in. In the following figure, the first
channel is a catalytic LEL channel and the fifth channel is an IR
autoranging CH
4
channel.
Figure 96: Autoranging IR CH
4
Interval Trend Data, Table Format
7. In the graph part of the screen,
• You can choose which gas(es) you want to graph by selecting or
deselecting the boxes next to each gas name.
• You can select the display units for the catalytic LEL channel (%LEL, ppm,
vol%). 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