User manual

2.3 Installing the optical unit
Installing the holder
1 Hook the holder into the slot on the
right hand side of the module.
Secure it by pushing up the slide
clamp.
Flow cell installation
There is one analytical (5 mm) and one preparative (2 mm) flow cell
available (stand-alone units only include the preparative flow cell).
Both cells are installed in the same way, as described below:
1 Remove the red protective plugs from
the detector housing and the flow cell.
2 Insert the flow cell into the detector
housing from above.
Note: The flow cell can only be placed in
one correct position.
3 Secure the flow cell by turning the
locking nut until the stop position.
Note: If the locking nut is not tightened sufficiently, the monitor
will function poorly (e.g. drifting base-line).
4 Place the protective cover around the flow
cell to protect the electronics inside the
optical unit from liquid spillage.
Note: Avoid spillage for prolonged monitor
lifetime.
5 To remove the flow cell, reverse the
procedure.
Note: Ensure that the Hg lamp position and
the filter is selected according to the wave length to be used. This is
described in the Changing lamp assembly section below.
Connecting the optical unit to the module
1 Place the optical unit in the
holder, or in a suitable location
as close to the column as
possible. The optical unit can be
placed up to 1.5 m from the
monitor housing.
2 Secure it by tightening the screw in the holder.
Monitor UPC-900
User Manual 18-1125-55 Edition AE
4
2 Installation
Protective cover
for flow cell
Protective plug
for detector aperture
2 mm
5 mm
O-ring
Detector
housing
Locking
nut
Conductivity cell
Optical unit
UPC-900
Holder
Holder
Screw
Optical
unit