Figure 4-8: Optical Zero Adjustment - Teledyne 7600 Operating Instructions Manual

Infrared Gas Analyzer
Where:
"Main" is signal input value from the main detector of each component.
"Comp" is signal input value from interference compensation detector of
each component. If low range exceeds the range of 0 to 10 vol %,
detector signal of "comp" is not usable.
In the above table, O
Sensor values which are not included in measuring components
should be ignored.
4. Adjust the primary side of the optical system (if
instrument is equipped with more than 1 measuring unit)
so that the onscreen values for (a) to (d) in 1-1 and 1-2 of
become as close to 0 as possible within ±100 range.
5. Adjust on the secondary side of the optical system so that
the values for (e) to (h) in 2-1 and 2-2 become as close to
0 as possible within ±100 range.
6. Operate the optical zero adjustment knob to change the
value displayed at (a) or (e). See Figure 4-8
7. Move the beam adjustment plate sideways to change the
value displayed at (b) or (f ). See Figure 4-9.
Teledyne Analytical Instruments
is excluded from the number of components.
2

Figure 4-8: Optical Zero Adjustment

Maintenance
101