Metrohm 894 Professional CVS - Manual (Page 43)

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3 Installation
894 Professional CVS
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Installing the FEP tubing in the RDE measuring head
NOTE
Use the appropriate FEP tubings from the tubing set (6.1829.070): For
the threaded openings 1 and WASTE, use the tubing with the long
kink protection; and for the threaded openings 2 and 3, use the tubing
with the short kink protection.
Proceed as follows:
1 Insert the conical end of the FEP tubing into one of the openings
(24 - 27) in the measuring head insert.
2 Carefully pull the conical end of the tubing protruding on the bottom
side of the measuring head insert through the opening using the
sandpaper supplied.
Pull the tubing through the opening until the kink protection of the
tubing sits flush on the threaded opening of the measuring head
insert.
3 Screw the tubing nipple of the FEP tubing into the required threaded
opening (1, 2, 3 or WASTE) of the measuring head connector plate.
4 Cut the FEP tubing on the underside of the measuring head to the
required length.
In order to prevent diffusion between the solution in the tubing and
the solution in the measuring vessel, make sure that the end of the
tubing is positioned above the measuring solution. This does not
apply to the tubing for draining the measuring solution; this tubing
must touch the floor of the measuring vessel.