User manual
Monitor UPC-900
User Manual 18-1125-55 Edition AE
10
2 Installation
2.10 Installing optical filters (optional)
The Hg optics with 254 and 280 nm filters and the Zn optics with
the 214 nm filter are delivered with filters installed. If other filters
are to be used, install them as follows:
1 If the Zn lamp is attached, remove
the lamp housing as described in section
Changing the UV lamp.
2 Remove the four screws in the filter
housing. Separate the filter housing from
the detector housing.
3 Carefully remove the filter wheel from the filter housing.
4 If necessary, remove the filter(s) from the filter wheel by
pressing it(them) out, e.g. with a small screwdriver.
Note: Filters are sensitive optical components. Never touch the
optical surfaces or expose them to temperatures above 60
o
C.
Clean them with dry lens cleaning tissue and store them, when
not in use, in the box in which they were supplied. Heavy
contamination may be removed by using a lens tissue dipped in
ethanol.
5 Insert the filter(s) of choice into the filter wheel (maximum 3
filters) with the correct orientation (the mirror side facing
upwards) and position over one of the three triangular
apertures. The filters snap in by pressing them quite firmly. Do
not touch the filter surface.
6 Remove the circular plastic band showing the wavelength(s).
7 Remove labels from the band if necessary.
8 Place the correct labels on the band with the label designation
facing outwards. Ensure that the label position corresponds to
the filter position, i.e. the label should be placed opposite the
filter.
9 Reassemble the circular plastic band with the filter wheel peg
fitting into the band notch.
10 Check that all filters are clean. Insert the filter wheel back into
the filter housing.
Note: The filter wheel can be placed only in correct position.
11 Reassemble the filter housing with the detector housing by
fastening the four screws.
o
2
1
4
o
2
5
4
o
2
8
0
o
3
1
3
o
3
6
5
o
4
0
5
o
4
3
6
o
5
4
6
o
2
1
4
o
2
5
4
o
2
8
0
o
3
1
3
o
3
6
5
o
4
0
5
o
4
3
6
o
5
4
6
280
o
Triangular
aperture