Campbell Scientific CVS4200 / BVS4300 Stationary Samplers - Manual (Page 13)

CVS4200 / BVS4300 Stationary Samplers
4.3.2 BVS4300 Wiring Procedure
1. Remove four retaining bolts (1/4–20) found across the top of the
instrument panel (18 in FIGURE 5-1).
2. If the sampler is refrigerated, make sure the discharge tubing and container
full wiring (if so equipped) are extracted from the fridge.
3. Slide out instrument section. The drawer glides that the sampler chassis is
mounted on are designed to fully extend from the cabinet.
4. Route cabling from external devices through the 2.75 inch conduit knock-
outs and connect to the terminal block (see FIGURE 4-2). The terminals
for field connection are located along the side at the rear of the tray.
Use shielded cables for wiring remote/external functions and
terminate the shield at the AC ground terminal on the sampler
main terminal block, or at the remote site, but not both. NOTE
5. Bring power from main distribution panel along a path that does not
parallel any existing power wiring to motors, solenoids, or contactors.
When sampler power lines must cross existing power lines, do so at right
angles.
6. Ensure that the wiring harness will not rub or catch in the slide
mechanisms before sliding the instrument section back into the cabinet.
7. Replace the four retaining bolts. Although not required for operation, use
of these retaining bolts reduces the effects of vibration that occur when the
sampler is cycling.
4.4 Program the Sampler
4.4.1 Automatic Sampling Program
To begin a new, quick program:
Press “SET”
Press “NEW ENTRIES”. Press “ENTER”
START DELAY (how you will be delaying the
sample program until certain external conditions are
met). Select, using arrows, which parameter you
would like, and adjust settings (see Section 7.6.4,
Programming START DELAY). Options: DISABLE;
TIME/DAY; PULSE INPUT; 4-20mA INPUT;
EXTERNAL CONTACT; LEVEL CONTROL.
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