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3.
Highlight an
SDI-12 CHANNEL
to configure and press the
Enter key.
NOTE:
Select a different input channel for each SDI-12
parameter that will be used to trigger sampling. The
input channel selected for each parameter should match
the channel configured for that parameter on the SDI-12
device.
4.
Select the appropriate
Unit
for the channel that is being
configured and press the Enter key. In this example, pH is
configured to be the Channel 1 unit, as pH is configured to be
the channel 1 unit on the EXO3 sonde.
5.
Select the
Limit Channel
to be used.
If a
Low Setpoint
is selected, any measurement value lower
than the Low Setpoint will trigger samples to be taken. As an
example, if a Low Setpoint of 6 is entered, then sampling will be
triggered once pH lowers to 6.
If a
High Setpoint
is selected, any measurement value higher
than the High Setpoint will trigger samples to be taken. As an
example, if a High Setpoint of 8 is entered, then sampling will
be triggered once pH increases to 8.
6.
Enter the Setpoint value and press the Enter key.
7.
The ProSample will request a
Deadband
be entered.
Deadband is important when using the Event method of
sampling, but
Deadband is not relevant with the Continuous
method (any value can be entered since ProSample will
continue to run the program until completion)
.
If a High Setpoint is entered, Deadband is a value the selected
parameter must drop below before sampling no longer occurs
(Event method only). As an example, if pH 8 is the High Setpoint
and a Deadband of 0.5 is entered, the pH must drop below 7.5
before sampling no longer occurs.
If a Low Setpoint is entered, Deadband is the value the selected
parameter must rise above before sampling no longer occurs
(Event method only). As an example, if pH 6 is the Low Setpoint
and a Deadband of 0.5 is entered, the pH must rise above 6.5
before sampling no longer occurs.
Programming: SDI-12 Parameter Driven Sampling
