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
SLOPE
∆ ∆ ∆ ∆ ∆ AL
ACID SET/COARSE To coarsely adjust the
ACID SET/FINE
BASE SET/COARSE To coarsely adjust the
BASE SET/FINE
Leds
ACID SET (Blinking)
BASE SET (Blinking) To show the basic
∆ ∆ ∆ ∆ ∆ AL (Blinking)
15
For Offset calibration
For Slope calibration
To set the tolerance of
the alarm
acid set point
To finely adjust the
acid set point
basic set point
To finely adjust the ba-
sic set point
To show the acid dos-
age is active
dosage is active
To show the alarm is
active