SERVOPRO NOx Analyzers Page
This screen is accessed by pressing from the Diagnostics menu.
Raw Voltage: This is a 0.512 VDC to 4.512 VDC that will be digitized by the
microprocessor to generate the calibration curve from which the Raw Concentration and
Measured Concentration are derived. The 0.512 volts is equal to 0 ppm and 4.512 is equal
to the four factory-set range limits. (Example of standard analyzer range limits: 3, 30,
300 and 3000.)
Raw Concentration: This value (in ppm) is calculated from the Raw Volts before
linearization and offset and span corrections are applied.
Measured Concentration: This value (in ppm) is calculated from the Raw
Concentration. Then linearization, offset and span corrections are applied.
From the Raw Values Display screen, the following functions can be useful for
diagnosing and monitoring the analyzer’s performance:
Press to change the analyzer’s mode to NO or NO
x
. If the analyzer is in
NO/NO
x
/NO
2
mode it will continue to switch between NO and NO
x
. The current mode is
displayed after the (…). Example: F1 Mode. . . NOx.
Press to access the Current Alarms screen. Press the Back button to return to
the Raw Values Display screen.
Press to view the
Diagnostic Values screens.
Press to open the Zero valve (if your analyzer is equipped with optional calibration
valves). Zero will be indicated above the range (at the bottom right of the screen). To
return to the Measure mode, press F4 again. Meas will be indicated above the range on
the screen.
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