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NDIR Gas Analyzer Display and Operation Panels
Teledyne Analytical Instruments 31
• O
2
corrected concentration values:
• Ch components in which “cv**” is displayed as “cv CO” in the
display are calculated values derived from the following
equation. Refer to Section 6.7 Maintenance Mode - Other
Parameter.
where:
O
n
: The value of the O
2
correction reference value (set by application)
O
s
: Oxygen concentration (Vol%)
C
s
: Concentration of relevant measured component.
Note that O
s
does not exceed the O
2
limit value set in Section
6.7 Maintenance mode - Other parameter.
C: Sample gas concentration (O
2
corrected).
The corrected sampling components are NOX , SO
2
and CO only.
• O2 corrected concentration average value:
In the Ch (component) and O2 average value where “CV/AV **” is
displayed as “ CV/AV CO” in the component display, a value obtained by
averaging O
2
corrected concentration value or O
2
average value in a
fixed time is output every 30 seconds.
Averaging time can be changed between 1 to 59 minutes or 1 to 4
hours according to the average time settings (See Section 6.7, Parameter
Setting).
(The averaging set time is displayed as “1h”, for instance, in the
range display).
* The measurement ranges for O
2
correction concentration value
and O
2
correction concentration average value are the same as
the measuring components. Also, the measurement range of the
O
2
average value is the same as for O
2
.
s
s
C
O
O
C
)21(
)21(
n