PVS5120-Series Portable Samplers
5
1.
Service the sampler:
Push the button once and release. Servicing the
sampler tells the controller to zero all the sample counts and return to the
first bottle or home position. It assumes the user has emptied or replaced
the bottles. The next sample collected and logged by the datalogger is
bottle 1, sample number 1.
2.
Manual Sample collection:
Push the button twice and release. This
directs the sampler to collect a manual sample into whichever bottle the
sampler is currently on independent of the datalogger. This sample is
logged by the controller. The next time the datalogger tells the sampler to
collect a sample, the count increments by two.
For example, if the sampler is collecting only one sampler per bottle and it
is on bottle two, the manual sample drops in bottle 2 and the arm moves to
bottle 3. The next time the datalogger initiates a sample, the sampler
deposits it into bottle 3. The controller then returns to the datalogger the
following status values: bottle 3, sample 1, response code 0, and the
sampler battery voltage.
3.
Auto Deploy routine:
Push and hold the button until the sampler begins
running and then release the button. The Auto Deploy routine runs the
sampler through an entire sampling sequence while keeping track of the
time to move water from the water source to the metering chamber. It uses
this information to set the purge and the vacuum times within the
controller. The user can see these times and keep them or change them by
connecting to the VSC100 with our
Device Configuration Utility
(
DevConfig
).
4.2 Composite and Discrete Overview
4.2.1 Discrete Sampling
The PVS5120D is a discrete system that places samples into more than one
container. It has a stepper assembly that moves a distributor arm. The
distributor arm revolves 360° and can deliver samples into 24 separate
containers. An encoder senses the distributor arm position. The PVS5120D
samplers can have 500 mL or 1 L bottles (FIGURE
). Available bottle
configurations are 1, 2, 3, 4, 6, 8, 12, and 24.
Discrete sampling is beneficial in situations where change over time needs to
be measured, such as measuring different water characteristics over 24 hours.
Labs and monitoring personnel tend to rely on discrete sampling.
4.2.2 Composite Sampling
The PVS5120C composite sampler draws water samples into one 9 L container
). Composite sampling is the simplest method for taking samples
and is often used when the sampler is measuring effluent in one location. The
composite sampler is also less expensive than the discrete model.
Summary of Contents for PVS5120 Series
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Page 70: ...Appendix A Sample Transport Velocity A 2...
Page 78: ...Appendix B Example Programs B 8...
Page 86: ...Appendix C Monitoring Sampler Status via RS 485 C 8...
Page 96: ...Appendix G Generic Modbus Control G 4...
Page 100: ...Appendix H ISO5667 Conformity H 4...
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