Hanna Instruments HI 8050 - Manual (Page 50)

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ALARM BEHAVIOR – S54
Ctrl on pH alarm: Y
Irrig on pH alarm: Y
Ctrl on EC alarm: Y
ALARM BEHAVIOR S54
This panel allows the selection of specific Ec/pH alarm behavior. Once entering the
set mode, one of the 3 choices can be selected using the arrow keys. Y (yes) can be
entered next to the selected option. Y (yes) and N (no) keys are used to select the
option of continuing or stopping control or irrigation during a pH or EC alarm
condition. This panel displays and allows the setting of the following parameters:
− Ctrl on pH alarm
Ctrl on pH alarm Ctrl on pH alarm Ctrl on pH alarm Ctrl on pH alarm - Entering Y (yes) then ENTER ENTER ENTER ENTER ENTER allows the controller to
continue control execution during a pH alarm condition.
− Irrig on pH alarm - Entering Y (yes) then ENTER ENTER ENTER ENTER ENTER allows the controller to
continue irrigation during a pH alarm condition.
− Ctrl on pH alarm Ctrl on pH alarm Ctrl on pH alarm Ctrl on pH alarm Ctrl on pH alarm - Entering Y (yes) then ENTER ENTER ENTER ENTER ENTER allows the controller to
continue control execution during a EC alarm condition.
IRRIG CTRL MODE – S55
Program 01
Volume control: N
Time control: Y
IRRIG CTRL MODE S55
This panel allows the selection of control based on time or volume. Y (yes)
and N (no) keys are used to select only one of the two options. Switching the
control mode is only possible if the program is not active. When changing the
control mode the settings for the sector loose their meaning. Because there is
no reliable way of converting sector settings from time to volume and from
volume to time the sectors are set to zero. The fertilizer control mode is also
defaulted to EC. Other program settings remain unchanged. This panel dis-
plays and allows the setting of the following parameters:
− Volume control
− Time control
SET FLOW PARAMETERS – S56
Flow=100% Sect 01
Max. time =00:30H:m
L/impulse=0010
SET FLOW PARAMS S56