Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2
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2.3. Initial Operation 1. Turn on the instrument power.
2. The display should immediately light, showing the computer’s memory configuration, then
the instrument type - M200AH. If you are unfamiliar with the M200AH, we recommend that
you read the overview Section 4 before proceeding. A diagram of the software menu trees is
in Figure 5-1 and Figure 5-2.
3. The M200AH requires about 30 minutes for all internal components to come to temperature.
During this time the ozone generator power is OFF until the membrane dryer has time to
purge itself, therefore there will be no response from the instrument, even if span gas is
coming in the sample port. Many warning conditions are not displayed during this time, even
though temperatures and other conditions are out of specification. All warning messages are
enabled after 30 minutes of operation.
4. While waiting for instrument temperatures to stabilize, you can check for correct operation
by using some of the M200AH's diagnostic and test features.
5. Examine the TEST functions by comparing the values listed in Table 2-1 to those in the
display. Remember that as the instrument warms up the values may not have reached their
final values yet. If you would like to know more about the meaning and utility of each TEST
function refer to Table 9-1. Also, now is a good time to verify that the instrument was
shipped with the options you ordered. Table 2-1 also contains the list of options. Section 6
covers setting up the options.
6. Electric Test and Optic Test both generate simulated signals in the M200AH.
A. Electric Test checks the electronics of the PMT signal path. To operate Electric Test from
the front panel:
1) Scroll the TEST function to PMT.
2) Press SETUP-MORE-DIAG, then press ENTR to accept the default password. Scroll
to Electric Test and press ENTR to turn it on. Instrument responses should come to the
values indicated in Table 2-1. To turn off this test press EXIT. For more information
on the circuitry being tested refer to the Troubleshooting Section 9.1.3.2.
B. Optic Test is an "end to end" test of the analyzer HVPS-PMT-detector-electronics-
computer. It simulates a signal by turning on a LED in the Sensor Module. To operate
Optic Test from the front panel:
1) Scroll the TEST function to PMT.
2) Press SETUP-MORE-DIAG, then press ENTR to accept the default password. Scroll
to Optic Test and press ENTR to turn on optic test. Instrument response should come
up to the values indicated in Table 2-1. To turn off this test press EXIT. To return to
the SAMPLE mode press EXIT until SAMPLE is displayed in the upper left display.
For more information about OT operation see Section 9.1.3.3.