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2.4.1 Attaching Vinyl
Suction Line
Figure 2-1 Attaching the suction line to the pump tubing
damage. The vinyl suction line contains a very low PPM (parts
per million) level of phenols. If this affects your samples, use the
PTFE suction line.
You can cut both vinyl and PTFE lines to any length from 3 to 99
feet in 1-foot increments. Cut the suction line in whole-foot incre-
ments: lengths of 4 feet, not 3.5 feet. The controller will accept
only whole numbers as suction-line lengths.
To ensure the accuracy of the sampler, you must enter a
suction-line length equal that of the actual line measurement.
When programming the sampler, you must enter the inside
diameter, type, and length of suction line used.
Cut the line to the shortest length feasible: this aids the downhill
routing. Avoid loops of coiled suction line, which may hold
residual amounts of liquid that would cross-contaminate sample
volumes. A shorter suction line will also extend battery life and
pump-tube life because the sampler will require a shorter
pumping cycle to deliver the sample volume.
Attach vinyl suction line to the pump tubing with the tube cou-
pling. Two couplings are available, one for each size of vinyl line.
Attach the vinyl suction line to the pump tube with the tubing
coupler. First, screw the threaded end into the suction line until
the flat surface is flush against the suction line (Figure 2-1).
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.
1.
2.
3700 Portable Samplers
Section 2 Setup Procedures
2-3
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