4. Press “CAL” key for 2-3
seconds to erase ALL
stored data and return to
“Measure Mode.”
ONGOING MAINTENANCE
A. Replace Electrode
1. Unscrew the electrode collar to
remove the electrode & ATC
assembly as shown in the right
figure.
2. Remove the old electrode from
the electrode collar.
3. Insert a new electrode, make sure the electrode fit back
into the meter correctly.
4. Screw back the electrode collar.
5.
Soak the electrode in a 3M KCL solution for 2 hours and
recalibrate the pH 618N following the instructions detailed
in section
USING VISIONPLUS pH 618N
.
8
