Key
Operation
Mode
Duration
Function
CAL
Recall Data
2 seconds
Erases ALL stored
data and return to
Measure Mode.
Measure
2 seconds
Stores current pH
reading, date and
time into memory.
Date and
Time Set
0 second
Increases current
number.
Recall Data
2 seconds
or more
Leaves Recall Data
Mode.
STORE
Buffer Select 2 seconds
or more
Leaves Buffer
Select Mode.
Measure
2 seconds
Enters Recall Data
Mode.
Measure
5 seconds
or more
Enters Buffer
Select Mode.
Recall Data
0 second
Scrolls through
stored data.
Date and
Time Set
0 second
Decreases current
number.
SCROLL
Buffer
Select
0 second
Selects new buffer
set.
USING VISIONPLUS pH 618N
A. Power ON/OFF
Press “HOLD” key for 2 seconds or more. The unit will turn on
and enter the “Measure Mode”. Repeat the process to turn off
the unit. The unit will also automatically turn off after 10 minutes
of no key activity.
B. Set Date and Time
1. Press “CAL” key for 10
seconds or more to enter
“Date and Time Set Mode”.
2. Press “HOLD” key to select
calendar or time parameters.
3. Press “STORE” and
“SCROLL” keys to increase and decrease values respectively.
4. Press “CAL” key for 2 seconds to exit and return to
“Measure Mode”.
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