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3700 Portable Samplers
Section 4 Options and Interfacing Equipment
4.2.2 Standard Sample
Bottle Tub
4.2.3 Optional Composite
Tub
Figure 4-1 Composite Sampling: Float and Float Cage Installed on Center Section
4-2
tainer and provide a fail-safe shut-off to prevent accidental
over filling of the composite container.
4. Feed the 34.5-inch (88.5-cm) composite-pump tube (sup-
plied with the optional float and float cage) through the
port in the center section. Then, place it in the float-cage
tube guide, as shown in Figure 4-1, and install it in the
pump as described in Installing a New Pump Tube (Section
5.3.3).
You can collect composite samples in the 3700 Standard's sample
bottle base equipped with either a 2.5-gallon glass or polyeth-
ylene plastic container (or by inserting either type of container in
the 3700 Compact's base).
These containers are available as options for the samplers. If you
intend to use the 2.5-gallon composite sample containers in the
standard sample-bottle tub, you must have the standard base
composite bottle locating deck with the 3700 Standard.
Installing the Deck in the 3700 Standard – P r e p a r e
standard bottle base by first removing the retaining ring and
sample bottles. Then, place the locating deck, open side down, in
the bottom of the sample bottle tub. The locating deck has two
recessed areas: the deeper recess locates the glass container, the
shallower recess locates the plastic bottle. Finally, place the
desired sample container on the locating deck and re-assemble
the sampler.
The 3700 Standard has two sizes of composite containers:
2.5-gallon and 4-gallon. The 2.5-gallon containers are used with
the sequential bottle base and a locating ring. The 4-gallon
wide-mouth composite container requires the optional composite
tub. Like the standard tub, the composite base has double-walled
construction with polyurethane foam insulation.
t h e
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