Campbell PVS5120 Series, Инструкция по эксплуатации

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PVS5120-Series Portable Samplers
32
RS-485, see Appendix C , 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 8-6 ).
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 7.3.1 , Water
Detection Probe
(p. 24)
, for more information.