17
pH 7 TEST
To verify the internal cir-
cuit of the meter in terms
of Offset compensation
pH 4 TEST
To verify the amplifier cir-
cuit of the meter
Trimmers
∆∆∆∆∆
O
For Offset calibration
SLOPE
For Slope calibration
∆∆∆∆∆
AL
To set the tolerance of
the alarm
ACID SET/COARSE To coarsely adjust the
acid set point
ACID SET/FINE
To finely adjust the
acid set point
BASE SET/COARSE To coarsely adjust the
basic set point
BASE SET/FINE
To finely adjust the ba-
sic set point
Leds
ACID SET (Blinking)
To show the acid dos-
age is active
BASE SET (Blinking) To show the basic
dosage is active
∆∆∆∆∆
AL (Blinking)
To show the alarm is
active
