Filter Substitution - GMB Spectrolino Operation Manual

Spectrolino
3
operation
18
EN
3.4.4 Filter substitution (only for Spectrolino 4.5 mm)
The Spectrolino comes equipped with three different filters tubes. Depending upon
the application, it is possible to attach a NO filter, a POL filter (Polarisation) or a D65
filter in front of the measuring aperture. The filters are marked with the following white
coloured letters:
Filter NO: U
To substitute a filter attached to the aperture, turn the filter
tube in a counter clockwise direction until the point of the
arrow aligns with the arrow on the instrument. In this po-
sition, the filter may be easily removed. To attach new filter,
align with the reference arrows and turn clockwise to the
end of the mark. This is the only correct position for the filter.
- Important: Following every filter substitution it is necessary to perform
absolute white calibration of the measuring device.
- Keep unused filters in a dark, dry place, well protected from dust.
Regularly check that the filters are clean. Dirt or fingerprints may cause
errors in measurement results.
Filter POL: P Filter D65: D65