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4.2.4 Programming and
Configuring for
Composite Sampling
4.3 Connections to
External Devices
4.3.1 Isco Flow Meters and
Flow Loggers
Section 4 Options and Interfacing Equipment
Prepare the tub for composite sampling by installing the sample
container. No locating deck is required for the composite tub:
locating depressions are integrally molded into the tub. You can
then attach the composite base to the center section. Note: When
cooling the samples with ice, the melt water may cause the bottle
to float when you remove the center section.
After converting the sampler, be sure to change the bottle
number and size settings in the Bottles and Sizes configure
option. (Refer to Event Mark and Bottle Signal Output.) You
must reprogram the controller for composite sampling because
changing the bottle setting will change the program sequence.
Refer to Programming Introduction for information on pro-
gramming the controller.
The 3700 Series Samplers can collect samples on a flow-paced
basis using flow inputs from an external flow meter. The 3700
requires a 5-to-15 VDC pulse of at least 25-millisecond duration
to register a flow pulse. Open-channel flow meters are con-
nected to the sampler by attaching a flow meter connect cable to
the flow meter connector located on the rear of the sampler.
Closed-pipe flow meters are connected to the sampler's Flow
Meter port using the Teledyne Isco 4-20 mA Input Interface
device (see Appendix B Accessories).
Your sampler has an additional connector, labeled "PRINTER,"
used to connect the sampler to an Isco Field Printer or laptop
computer. Both the flow meter connector and the printer con-
nector use the same 6-pin configuration. The printer cable con-
nector accepts both the connector from the field printer and a
cable from a field computer or a laptop computer running the
Samplink software.
Note
The Field Printer has been discontinued and is no longer sold
by Teledyne Isco.
The 4200 Series Flow Meters, 2100 Series Flow Modules, and
4100 Series Flow Loggers, and UniMag Closed-Pipe Flow Meters,
are collectively called "flow meters" in this manual. You can pur-
chase cables to connect the 3700 samplers to an Isco flow meter,
flow logger, or 2100 series flow module. Refer to the Accessories
List for details. To make the connection, attach the appropriate
cable connector to the flow meter according to directions in the
flow meter in instruction manual, attach the other connector to
the 6-pin flow meter connector on the rear of the sampler.
Note
If a connect cable is not attached to the flow meter or print con-
nectors, be sure that the protective covers are tightly fastened in
place.
3700 Portable Samplers
4-3
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