Hanna Instruments HI 8000 Series - Manual (Page 53)

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SensNr = The selectable number of pH sensors in the system (1 to 2).
SensNr = The selectable number of EC sensors in the system (1 to 3).
SDif
The maximum allowable distance between the pH sensors values.
SDif
The maximum allowable distance between the EC sensors values and also
the maximum value that is acceptable on the water supply sensor.
5.9.6 SET FLOW PARAMETERS – S 56
Flow=010L Sect 01
L/impulse=060
SET FLOW PARAMS S56
If flow is chosen as the irrigation control variable, this panel allows the setting of
the flow parameters. The sector number indexes this panel. This panel displays
and allows the setting of the following parameters:
Flow = The selectable volume for the indexed sector.
Sect
The panel index. The sector number (label).
L / impulse = Selectable flow value per one impulse of the flow counter.
5.9.7 SET PID PARAMETERS – S 57
PHk=01.0 ECk =01.3
PHTi=10.0 ECTi =10.0
PHTd=00.5 ECTd =00.5
SET PID PARAMS S57
This panel allows the setting of the control action for pH and EC. This panel
displays and allows the setting of the following parameters:
pHk
Factory amplification setting for pH control (controller gain).
pHTi
Integral constant for pH control. Reset time. Setting the value to 99.9 min-
utes effectively disables the integral function.
pHTd
Derivative constant for pH control. Rate time. Setting the value to 0.00
minutes effectively disables the derivative function.