Yokogawa In-Situ Gas Analyzer TDLS200 User Manual
Page 32
32
IM11Y01B01-12E-A
1st Edition
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Once visual alignment is achieved on both the launch and detect, power may be applied to
the analyzer.
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Begin the alignment process by starting at the launch unit to maximize the signal by moving
the launch around using the alignment bellows while watching the scope screen. .
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Once maximum signal is achieved, (Note that the signal may be very small initially, as
low as 0.1 volts) move to the detect end and using the method described in the previous
slide, move the LAO/detect assembly around, until maximum signal is achieved.
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The launch and detect alignment steps may need to be repeated several times to ensure
maximum transmission.
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Once maximum transmission is achieved, move to the next step and ensure the laser is
centered.
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This is done by “sweeping” the laser across the detector in both the horizontal and vertical
axis. To accomplish this, use the nuts on the alignment bellows to “sweep” the beam.