GMI GT series User Manual

7-4
CO (CARBON MONOXIDE MODE)USER HANDBOOK
This is the CO reading modified by the O
2
reading
(only applicable if O
2
sensor is tted).
CO Air-free = (20.9 x CO) / ( 20.9 – O
2
).
The typical display for this
mode is shown opposite, in
Fig. 7.5:
A sample is considered
invalid until the Oxygen (O
2
)
concentration is below 19%
Vol.
Changes to Fig 7.6 when valid
sample is taken.
7.4.4 CO Viewing
This option allows the user to view the six (6) most recent manually
logged readings.
If this mode is enabled, a
results screen will be
displayed, as shown in Fig.
7.7, when entering any of the
other three modes.
Note 1: The display briey ickers each time that a timed log is
captured (normally every minute).
Fig. 7.7 CO Viewing Display
Fig. 7.6 Valid Sample
Fig. 7.5 Air-Free CO

GMI GT series Specifications

General

Brand	GMI
Model	GT series
Category	Measuring Instruments
Language	English