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2.0 Weight Ratio Dispensing: How to Get Started
If a data printout is desired, connect the cable (P/N: 080-096) between the LabTec™ “Printer” port
and the Parker printer (P/N; 080-095). In the LabTec™ Setup: Printer submenu,
make sure all the
printer communications parameters have been entered. Turn on the printer, in the
LabTec™ select
the Weight Ratio mode, then press “Exec” key; the fi st line to be printed will consist
of weight ratio
dispensing parameters.
Install the pump tubing: For most weight ratio dispensing applications, #24 thick-walled silicone
pump tubing is recommended (requires a 1082 peristaltic pump). Use approximately six (6) feet of
#24 tubing; install the tubing such that two feet of tubing is located on the discharge side while four
feet of tubing are located on the suction side of
the . (These lengths are guidelines only.)
If you use a 201 Magnetic Gear Pump Head, #24 Silicone pump tubing is also recommended. However
in this case, pipe adapters (¼ x 1/8”, male, P/N: 400-500) are installed at the inlet and outlet ports of
the 201 magnetic gear pump head. The #24 Silicone tubing slips tightly over the inlet and outlet pipe
adapters.
The scale should be located next to the LabTec™. On the discharge side, fasten the pump tubing to
a ring stand (P/N: 400-420) using nylon ties. The dispensing tip should be secured with a clamp and
located above the scale with sufficient clearing to allow the easy removal of any sample bags or
containers. On the suction side of the LabTec™, secure the pump tubing to the solution reservoir.
Press the “Prime” key at the LabTec™ front panel until all of the tubing is filled with solution.
Consult the Weight Ratio Edit section of the manual to edit the weight ratio dispensing parameters.
Press “Exec” key, select “Exec 1”, the LabTec™ will show the following display:
While the message is being displayed, the LabTec™ checks the scale communications parameters
and the following display is shown:
Press the “RUN” key or press the foot switch:
Note: This arrangement allows used pump tube sections located in the to be replaced with new
tube section located at the suction side of the pump. When advancing pump tubing in this man-
ner, the used pump tube sections end up on the pump discharge side.
SCALE INITIALIZING
Please Wait
WGT RATIO SET:
9:00
Press RUN When Ready
Press RUN When
VESSEL IS ON SCALE
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