3 Basic Operation
3.3 Comfirming the Filter
10 FPD-2010
5.
When filter check is complete, mount the photomultiplier. If difference of height exists at the
connecting portion of the lens and the photomultiplier, stray light may result. When mounting the
photomultiplier, adjust the height using screws at two locations on the shielding plate at the lower
portion of that photomultiplier so that no inclination will be made. (In most cases, it is not necessary to
change the height as the unit is so adjusted at installation that any inclination is eliminated.)
Make adjustment with screws
at these two places.
Shield plate
Fig. 3.3.4
NOTE When replacing the filer, refer to the section “5.4 Maintenance and Replacement of the Filter” in “5.
Maintenance and Inspection”.
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