Teledyne API Model 200AH NO
X
Analyzer Instruction Manual, 06492, Rev. G2
2-8
7. When the instrument is warmed up, re-check the TEST functions against Table 2-1. All of
the readings should compare closely with those in the table. If they do not see Section 9.1.1.
The next task is to calibrate the analyzer. There are several ways to do a calibration, they are
summarized in Table 7-1. For a preliminary checkout we recommend calibration with span
gas coming in through the sample port. The procedure is:
Step 1 - Set the range, then enter the expected NO
x
, NO and O
2
span gas concentrations:
Step
For Units w/o
O
2
Option
For Units with
O
2
Option
Comment
1. Press
CAL-CONC-NOX
Press
CAL-NOX-ENTR
CONC-NOX
This key sequence causes the M200AH to
prompt for the expected span concentration.
Enter the span value by pressing the key under
each digit until the expected value is set.
2. Press ENTR Press ENTR
ENTR stores the expected NO
x
span value. The
internal formulas are adjusted to compute this
number when span gas concentration is input
into the instrument.
3. Press
CAL-CONC-NO
Press
CAL-NOX-ENTR
CONC-NO
In the same CAL-CONC sub menu press the
NO button and enter the expected NO span
value. As before this value will be used in the
internal formulas to compute the NO
concentration value.
4. Press ENTR Press ENTR
ENTR stores the expected NO span value. The
internal formulas are adjusted to compute this
number when span gas concentration is input
into the instrument.
5. Press
CAL-O2-CONC
Enter the expected O
2
span value by pressing
the key under each digit until the expected
value is set.
6. Press ENTR
ENTR stores the expected O
2
span value. The
internal formulas are adjusted to compute this
number when span gas concentration is input
into the instrument.
7. Press EXIT Press EXIT
Returns instrument to SAMPLE mode.
8. Press
SETUP-RNGE-
MODE-SNGL
Press
SETUP-RNGE-
MODE-SNGL
If necessary, you may want to change ranges.
Normally the instrument is shipped in single
range mode set at 100 ppm for NO
x
and 25%
for O
2
. We recommend doing the initial
checkout with these ranges.
9. Press
SETUP-RNGE-SET
Press
SETUP-RNGE-SET
After SETUP-RNGE-SET, enter 100 and press
ENTR. The instrument will now be in the
100 ppm range for NO
x
and (if installed) will
display the O
2
range. Enter 25.0 and press
ENTR.
