Hanna Instruments HI 8050 User Manual

Page 49

PH CTRL OPTIONS – S51

Ctrl in Pre/Post Y

Use acid in pHCtrl Y

PH CTRL OPTIONS S51

This panel allows selection of pH control options. Control in “pre” and “post”
irrigation states as well as acid or base selection is selectable. This panel
displays and allows the setting of the following parameters:
− Ctrl in P

Ctrl in P

Ctrl in Pre / P

re / P

re / Post

ost

ost - Enter Y (yes) then ENTER

ENTER

ENTER to control pH prior and after

irrigation.

− Use acid in pHCtrl (only for HI8050) -

Use acid in pHCtrl (only for HI8050) -

Use acid in pHCtrl (only for HI8050) - Enter Y (yes) / N (no) then

ENTER

ENTER to control pH using dosing of acid / base. For HI8060

HI8060

HI8060 the user will be

informed which pH correction tank (acid/alkaline) is used at a certain moment.

VOL DOSE ALARM – S52

Overdose: +10%

Underdose: -20%

VOL DOSE ALARM S52

OVERDOSE: the maximum quantity that can be overdosed before an over-
dose alarm is on.
UNDERDOSE: the maximum quantity that can miss from the fertilizer before
an underdose alarm is turned on.
NOTE: This parameter is very sensitive due to the nature of the algorithm, see
the alarms section. Overdose and underdose are available only for the
ratiometric and volume fertilizer control modes.

STOP ON VOL ALARM – S53

Overdose :N

Underdose :N

Tank empty:Y

STOP ON VOL ALRM S53

This panel is used to specify which alarm volume will stop the irrigation pro-
cess. 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 the irriga-
tion if one of the specified alarms is triggered.

This manual is related to the following products:

HI 8060