LCD DISPLAY
8685/
8686
-The 1st display shows the measured pH
reading.
-The 2nd display shows the temp. (8685/86)
-
Auto Temp. Compensation
-Hold=Data hold
Cal=Calibration mode
-ATC=
8685/86
8684
8684/85/86
8684
KEYPAD
OPERATION
1. Remove the probe cover from meter
to expose the electrode out. For 8684
/85/86, it is n ormal if you find white
crystals are present on the c ap or
electrode assembly.
3
Hold
CAL
ATC
C
F
HoldCal
