Campbell PVS5120 Series, Instruction Manual

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PVS5120-Series Portable Samplers
13
via PakBus® or Modbus®. If SDI-12 control type is selected, RS-485
communication with the sampler is disabled. Similarly, if PakBus® is
selected, Modbus® communication is again disabled.
• PakBus Address : This setting specifies the PakBus® address for the
device if it is being controlled or monitored via PakBus®. It needs to
be a unique value for each sampler and datalogger on the network.
The default address for all samplers is 95. This address is used in the
program on the datalogger to reference the sampler for initiating
samples and collecting sampler status.
•
Modbus Address : Sets the sampler Modbus® address. It is active for
sampler control types: Pulse, Modbus®, and Time. It must be unique
for each sampler on your network and each datalogger. Range is 1
through 127.
•
SDI-12 Address
: Sampler SDI-12 address. It must be unique to each
sampler and SDI-12 sensor connected to a single COM port on your
datalogger. It is only active when SDI-12 is selected as the Sampler
Control Type. Address values can range from 0-9, A-Z, and a-z.
•
Number of Sampler Bottles
: This is the number of containers within
the sampler base.
•
Samples Per Bottle : Specifies how many samples to place in each
bottle. It can range from 1 to 999. This setting is ignored if Never
Full is set to “On/Enable”.
•
Never Full Option : Specifies whether the sampler stops or continues
sampling when each bottle(s) has been filled with the corresponding
samples per bottle setting. This option is most common in
applications where the sampler is easily accessible and containers are
collected regularly for instance at a wastewater treatment facility.
•
Purge Time: The amount of time (in seconds) the sampler hose is
evacuated before and after the sample is collected. The minimum
value is 0 s. The maximum value for PakBus®, Pulse, Modbus®, and
Time control types is 800 s. The maximum value for the SDI-12
control type is 280 s. It is possible for the final purge time to be set
separately under the
Advanced Sampler Settings
tab and is discussed
more below.
•
Water Present Sensor : Indicates to the sampler controller if an
optional water present sensor is installed. If the sensor is to be
connected, the sampler checks for the presence of water at the start of
each sample cycle. If water is not detected, a response code (TABLE
8-3 ) is generated and the cycle is aborted (Section 7.3.1 ,
Water
Detection Probe
(p. 24)
).
6.2.3 Advanced Sampler Settings Tab
Most users do not need to change the following Advanced Sampler Settings if
the Auto Deploy routine is completed when the sampler is deployed in the field
(FIGURE 6-6 ).