Teledyne 9110AH - Nitrogen oxides analyzer - Manual (Page 20)

TELEDYNE Model 9110AH NO
X
Analyzer Operator Manual, 01620, Rev. F
2-7
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
and NO span gas concentrations:
Step Number Action Comment
1. Press
CAL-CONC-NOX This key sequence causes the M9110AH 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 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 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 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 EXIT Returns instrument to SAMPLE mode.
6. 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. We
recommend doing the initial checkout on the 100 ppm range.
7. Press
SETUP-RNGE-
SET After SETUP-RNGE-SET, enter 100 and press ENTR. The
instrument will now be in the 100 ppm range.