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Revision 10
GT SERIES
1 INSTRUMENT, 7 APPLICATIONS
4.4.3. CO Sub-Modes
CO mode has four configurable sub-modes as shown in
. If your monitor
only has one enabled, the CO Menu will not be available.
Figure 33: CO Menu
1. To highlight the required option, press the UP
or DOWN
buttons.
2. Press and hold OK button to accept.
4.4.3.1. CO Direct
In this option, normal atmospheric air is checked for CO content. A typical display for this mode is
shown in
Figure 34: CO Direct
4.4.3.2. Differential CO
This option enables the user to zero out ambient or background levels of CO and then display the
differential measurement. This is useful in areas where the ambient CO might be impacted from
other sources, e.g. traffic pollution.
A typical display is shown in
.
To zero the displayed CO reading, press and hold the ZERO button
Figure 35: Differential CO