14
FUNCTIONAL DESCRIPTION HI 8711
DUAL OUTPUT pH CONTROLLER
Keypad
ACID SET
To set the working point
of acid dosage
BASE SET
To set the working point
of basic dosage
MEASURE
To set HI 8711 on mea-
surement mode and to en-
able the diagnostic tests
SENSOR TEST
To display the mV re-
sponse of the electrode to
verify its working condi-
tion.
∆∆∆∆∆
Al
To display and to set the
tolerance of the alarm
points
FRONT PANEL
SLOPE
∆
AL
∆
COARSE
ACID SET
FINE
COARSE
FINE
BASE SET
HI 8711E
SENSOR
TEST
MEA
SURE
ACID
SET
∆
AL
BASE
SET
pH 7
TEST
pH 4
TEST
pH
HI
8711E
pH
