AO2000
CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
289
Optical alignment procedure
CAUTION!
Current-bearing components can be exposed when the covers or parts
are removed, even if this can be done without tools. Current can be pre-
sent at some connection points. All work on a gas analyzer that is open
and connected to power should only be performed by trained personnel
who are familiar with the risks involved.
1
Turn on the zero gas supply.
2
Open the 19-inch housing front plate or the wall housing cover.
3
Select the menu item
Optical adjustm.
4
Select the
Sample component
to be measured in the rear detector (as
seen from the emitter).
5
Minimize the (zero gas) value displayed by turning the applicable beam
path aperture adjustment wheel
1
and.
2
.
If the measurement value is much smaller than 1,000,000, then go to
Step 10.
If the measurement value is still greater than 1,000,000, then go to
Step 6.
6
Loosen the two emitter case mounting screws
3
and insert the emitter
wrench
6
in openings
4
.
7
Turn the emitter case
5
until the displayed value is minimized.
(The minimum can be greater than 1,000,000.)
8
Tighten the emitter unit mounting screws
3
.
9
Repeat steps 5 to 8 until a minimum value is displayed.
10
Close the 19-inch housing front plate or the wall housing cover.
11
If the emitter is replaced, perform a phase alignment (see page 290) for
all sample components.
If the emitter is not replaced, calibrate the zero and span points for all
sample components in the beam path.
