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Teledyne API Model 201A NH
3
Analyzer Instruction Manual, 04689, Rev. B1
Table 2.1 - Zero Calibration Procedure - Zero Gas Through the Sample Port
Step No.
Action Comment
1. Press
CAL
The M201A enters the calibrate mode from
sample mode. Input zero gas through the
sample port.
2. Wait 20
min
Wait for reading to stabilize at zero value.
3. Press
ZERO
If you change your mind after pressing ZERO,
you can still press EXIT here without zeroing
the instrument.
4. Press
ENTR
Pressing ENTR actually changes the
calculation equations.
5. Press
EXIT
M201A returns to sampling. Immediately after
calibration, data is not added to the DAS
averages.
Table 2.2 - Enter the Expected Span Gas Concentrations Procedure
Step No.
Action Comment
1. Press
CAL-CONC-TNX
This key sequence causes the M201A to
prompt for the expected TNX concentration.
Enter the TNX 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 TNX span value.
3.
Press
CAL-CONC-TN
Now enter the expected TN span concentration
as in step one.
4. Press ENTR Pressing ENTR stores the TN span value and
returns the prompt to the CONC menu.
5.
Press EXIT Returns instrument to SAMPLE mode.
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