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FUNCTIONAL DESCRIPTION HI 931500
SINGLE OUTPUT pH CONTROLLER
FRONT PANEL
ins
e
rum n
s
HI 931500
pH Process
Controller
DOSAGE
pH
ACID BASE
SLOPE
SET
COARSE
FINE
∆O
SET
MEA
SURE
Keypad
SET To set the working point of pH
dosage
MEASURE To set HI 931500 on measure-
ment mode
Trimmers
∆∆
∆∆
∆O For Offset calibration
SLOPE For Slope calibration
SET/COARSE To coarsely adjust the set point
SET/FINE To finely adjust the set point
Leds
ACID To show the acid dosage is
active
BASE To show the basic dosage is
active