Filter
Top Products
Teledyne API Model 200AU NO
X
Analyzer Instruction Manual, 02293, Rev. F
7-5
Enter the expected NO
x
and NO span gas concentrations:
Table 7-3: Enter Expected Span Gas Concentrations Procedure
Step Number Action Comment
1. Press
CAL-CONC-NOX
This key sequence causes the M200AU to prompt for the
expected NO
x
concentration.
Enter the NO
x
span concentration value by pressing the key
under each digit until the expected value is set. This menu can
also be entered from CALS or CALZ.
2. Press ENTR ENTR stores the expected NO
x
span value.
3. Press
CAL-CONC-NO
Now enter the expected NO span concentration as in step one.
4. Press ENTR Pressing ENTR stores the NO span value and returns the
prompt to the CONC menu.
5. Press EXIT Returns instrument to SAMPLE mode.
If desired, compensation for moly converter efficiency (CE) can be included in the NO
x
concentration calculation. The CE must be entered prior to calibration. Refer to Section 7.6.6.1
for the CE procedure.
Table 7-4: Manual Span Calibration Procedure - Span Gas thru Sample Port
Step Number Action Comment
1. Press CAL The M200AU enters the calibrate mode. NO span gas should
be fed to the sample port. When the CAL button is pressed,
the adaptive filter is activated. This allows the instrument to
respond rapidly to concentration changes regardless of their
magnitude.
2. Wait 10 min Wait for reading to stabilize at span value.
3. Press SPAN If you change your mind after pressing SPAN, you can still
press EXIT here without spanning the instrument.
4. Press ENTR Pressing ENTR actually changes the calculation equations and
causes the instrument to read the NO and NO
x
span
concentrations.
5. Press EXIT M200AU returns to sampling. Immediately after calibration,
data is not added to the DAS averages.