PVS5120-Series Portable Samplers
32
RS-485, see Appendix
Monitoring Sampler Status via RS-485
(p. C-1)
, for
additional deployment steps.
8.2.3 SDI-12 Control
SDI-12 control runs the sampler as an SDI-12 sensor. The sampler connects to
the datalogger using the PVS5120CBL control cable. The
SDI12Sensor
instruction issues the sampler’s
M!
command to a specific port on the
datalogger. The SDI-12 address is assigned in
DevConfig
and referenced in the
datalogger program. Four status variables are returned to the datalogger via
SDI-12 once the sample is complete and in the case of the discrete sampler the
arm moved to the next location.
The sampler can run in concurrent SDI-12 mode by using a
C!
command. The
response time of the sampler varies depending on the purge, vacuum, and
sample drop times set up in
DevConfig
(for example, the longer the hose and
the greater the lift between the sampler and the water source the longer
response time to the
M!
command).
1. Once connected to the VSC100 in
DevConfig
, click the
Sampler Settings
tab (FIGURE
a. Set the
Control Type
to
SDI-12
.
b. Typically use the default
SDI-12 Address
of
0
.
c. Set the
Number of Sampler Bottles.
d. Set the
Samples Per Bottle
. It can range from
1
to
999
. This setting
is ignored if
Never Full
is set to
On/Enable
.
e. Typically leave the
Never Full Operation
disabled.
f. If the Auto Deploy routine has been run, the
Purge Time
is already
set. If not using Auto Deploy, enter the amount of time the sampler
hose is evacuated before and after the sample is collected.
g. If a
Water Present Sensor
is present, click to install. This sensor is
wired to the sampler control cable. See Section
(p. 24)
, for more information.
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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