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6712FR Refrigerated Sampler
Section 2 Installation/Preparation
2-7
The vinyl line contains a very low parts-per-million level of
phenols. If phenol content affects your sample analysis, use the
PTFE suction line.
When installing the sampler, be sure the vertical distance
between the liquid level and the pump is as small as possible.
2.3.1 Guidelines for
Measuring and Cutting
the Suction Line
• Cut the line to the desired length but use the shortest
length feasible for the installation.
• Cut the line in 1 foot increments. For instance, 4 feet,
not 3
1
/2. If using metric units of measure, cut the line in
increments of 0.1 meter. Do not include the length of the
strainer in the measurement.
2.3.2 Attaching Suction Line
to Pump Tube
Attach the vinyl suction line to the pump tube with the
3
/8-inch
tubing coupler. First, screw the threaded end into the suction line
until the flat surface is flush against the suction line
(Figure 2-5). Then, push the other end of the coupler into the end
of the pump tube until the other flat surface is flush against the
tubing.
Figure 2-5 Attaching the suction line to the pump tubing
Once the coupler is attached to the pump tube, removal is dif-
ficult, and may require cutting the tube.
1.
2.