Watson-Marlow 501RL - Manual (Page 17)

2.4mm wall transfer tubing Product codes
Tube Bore Tube
mm " # Silicone Marprene
1.6 1/16 119 910.0016.024 902.0016.024
3.2 1/8 120 910.0032.024 902.0032.024
4.8 3/16 15 910.0048.024 902.0048.024
6.4 1/4 24 910.0064.024 902.0064.024
8.0 5/16 121 910.0080.024 902.0080.024
9.6 3/8 122 910.0096.024 902.0096.024
Y connectors Product codes
For 1.6mm bore 999.3016.000
For 3.2mm bore 999.3032.000
For 4.8 and 6.4mm bore 999.3064.000
For 8.0mm bore 999.3080.000
For 9.6mm bore 999.3096.000
Tube loading
Tube loading instructions are given for the three possible methods of using a
505L pumphead.
For most dispensing, and any application where there must be minimal
pulsing, the use of Watson-Marlow Double-Y silicone tubing elements is
recommended.
These are pre-formed to the correct length and merge two out of phase flows
into a single smooth output. These elements fit on the retaining pegs supplied
with the pumphead.
Under certain circumstances it may be useful to run two separate inlet tubes
from your source to the pumphead. It is advisable to do this if the fluid is
particularly viscous and the single inlet tube is found to restrict the flow rate,
or if the pump is situated a long distance from the source reservoir and is
running at high speed.
A tube clamp set is available from Watson-Marlow (refer to the spares
section) to securely fix twin inlet tubes.
The 505L may also be used as a two channel, six roller, precision pumphead,
with two entirely separate tubes. The tube clamp set contains two clamps for
each size of tubing to enable both the inlet and the delivery side to be
securely fixed.
It should be noted that, when used in this way, the flow does not benefit from
the smoothing created by combining two out of phase flows, and slight
channel-to-channel variation may be found in the flow rates. Keeping suction
and discharge tubing lengths the same and will minimise this variation.
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