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Preventive Maintenance and Servicing
Gas Cell Alignment
5-48
Omni FTIR Multi Gas CEMS Instruction Manual
mirror. A few adjustments will show which way to move the image to
get it to where it needs to be.
8. Once the incoming light beam image is positioned, adjust the first
objective mirror to get the initial image on the field mirror at the
position shown as #1 in
mirror, use the 9/64-inch hax wrench to turn the adjustment screws,
Input Adjust (horizontal) and Input Adjust (vertical), located behind
the gas cell back plate (fitting plate). [Note that the plate was removed
earlier, but the adjustment screws remain. Use
to locate the screws.] Also note there is always one more image on the
bottom of the field mirror than on the top.
input
input
input
input
8
8
8
8
1
1
1
1
Figure 5–38. Typical Image Pattern on the Field Mirror
Figure 5–39. Location of Components on Back Plate of Gas Cell
Figure
5–38. To adjust the first objective
6
6
6
6
4
4
4
4
2
2
2
2
5
5
5
5
7
7
7
7
9
9
9
9
3
3
3
3
Figure 5–39
as a guide
output
output
output
output
Thermo Fisher Scientific
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