NDIR Gas Analyzer Display and Operation Panels
Teledyne Analytical Instruments 31
• O2 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:
On: The value of the O2 correction reference value (set by application)
Os: Oxygen concentration (Vol%)
Cs: Concentration of relevant measured component.
Note that Os does not exceed the O2 limit value set in Section
6.7 Maintenance mode - Other parameter.
C: Sample gas concentration (O2 corrected).
The corrected sampling components are NOX , SO2 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 O2 corrected concentration value or O2 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 O2 correction concentration value
and O2 correction concentration average value are the same as
the measuring components. Also, the measurement range of the
O2 average value is the same as for O2.
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