Campbell Scientific CVS4200 / BVS4300 Stationary Samplers - Manual (Page 20)

CVS4200 / BVS4300 Stationary Samplers
TABLE 5-2. CVS4200 Sampler Component Descriptions
Number Item Description
1 Intake Hose Connection The volume control tube is where the intake hose is connected to
the sampler. This stainless steel tube is raised or lowered
manually using fitting to set the sample volume (see FIGURE
5-3).
2 Multi-Function Input Controller This is where sampler is controlled and programmed.
3 Signal Lights and Control
Switch The optional top light (green) indicates sampler is running. The
second light (red) indicates reverse polarity if external battery is
being used. The toggle switch turns on/off the controller while
leaving power to the sampler.
4 Metering Chamber This chamber is where the sample liquid is drawn into before
dropping into the final container. The rods inside are raised and
lowered to the sample volume desired.
5 Pinch Valve This valve shuts during sampling, and then releases once desired
liquid has entered the chamber.
6 Breaker Switches All samplers have an on/off switch. Other option for switch is for
fridge.
7 Discharge Tube The sample liquid is released via the pinch valve to the sample
container(s) below. With composite (single container) units the
amount of built-up pressure may cause discharge tube to come
out of the container, so it is advisable to fasten it using the
provided lid.
8 Container Lid The special lid provided fastens the discharge tube to the sample
container. Weight prevents tube dislocation.
9 Sample Container The container that the sample is deposited into can be made from
a variety of materials, shapes, and sizes. Standard bottles are 2 or
5 gallon high density polyethylene (HDPE).
10 Instrumentation Section All instrumentation and wiring, including pump, are located in
this section of the sampler, protected from outside elements.
11 Field Wiring Terminals Terminal block for field wiring is located on the back of the
instrument tray
12 Refrigerator – Small Composite samplers have a smaller refrigerator by default.
13 Pressure Gauge Optional pressure gauge is useful for monitoring
vacuum/pressure status, i.e. for checking plugged lines and
discovering leaks.
14 Stepper Motor and Bracket Installed directly onto roof of refrigerator, this bracket is lined up
to deliver samples uniformly to multiple bottles. The stepper
moves the distributor arm after sampling the previous bottle.
15 Distributor Arm Stainless steel arm delivers liquid samples to the discrete bottles.
16 Discrete Bottles Diagram shows 24 wedge bottle arrangement. Any arrangement
of bottles is possible that is factors of 24 and fits inside the
limited space (for example, 2 x 2 gallon containers).
17 Removable Bottle Tray Some arrangements include a removable tray with handles for
easy swapping of bottles (24 bottle and 8 bottle options only).
18 Bottle Seating Template With removable bottle tray, a circular guide and bolt lock holds
tray in its precise location. With other bottle arrangements, the
template includes seating guides for each bottle individually.
19 Refrigerator - Large Discrete samplers have a large glass-door refrigerator with digital
thermostat display.
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