18
Installation and initial startup
BlueShadow Detector 50D Instructions V7659
4.4.1 Changing the optical path length of the prepara-
tive flow cell
At delivery, the optical path length of a preparative flow cell is set to
2 mm at the factory . To reduce it to 1 .25 or 0 .5 mm, proceed as follows .
This description applies to preparative flow cells with 1/8“ or 1/4“ connec-
tions .
Procedure
Process
Figure
1.
Remove the threaded ring
1
using a hexagonal spanner .
2.
Remove stainless steel cover
2
and the PEEK spacer
3
.
3.
Insert the stainless steel cover
again and carefully tighten
the threaded ring again .
4.
The missing spacer causes
the light guide
4
to be pus-
hed deeper into the flow cell
(0 .75 mm), resulting in a shor-
tened optical path length of
1 .25 mm . To further shorten
down to 0 .5 mm, the PEEK
spacer on the other cell side
must also be removed .
Fig. 4
Shortening the optical path
length
1
2
3
4
