4
OPERATION MODES AND KEYPAD OPERATIONS
A. Operation Modes
VisionPlus pH meter has 6 operation modes:
1. Measure Mode. Measure Mode is used to make all pH
and temperature measurements.
2. Calibration Mode. Calibration Mode is used to perform
1, 2 or 3 point calibration.
3. Hold Mode. Hold Mode is used to display held
measured values for increased ease of use.
4. Recall Data Mode. Recall Data mode is used to display
measured data which have been stored in memory.
5. Date and Time Set Mode. Date and Time Set Mode is
used to change date and time.
6.
Buffer Select Mode. Buffer Select Mode is used to
select the buffer set, which can either be
7.00(7.00/4.01/10.01) or 6.86(6.86/4.00/9.18).
B. Keypad Operations
Key
Operation
Mode
Duration Function
All, except
Hold
2 seconds
or more
Turns meter on/off.
Measure 0
second
Holds current
measurement
reading. Press
again to resume
measuring.
Hold 0
second
Returns to Measure
Mode.
HOLD
Date and
Time Set
0 second
Move cursor to next
set of data.
Measure 2
seconds
Enters Calibration
Mode.
Measure
10
seconds
or more
Enters Date and
Time Set Mode.
Calibration 0
seconds
Leaves Calibration
Mode.
CAL
Date and
Time Set
2 seconds
or more
Leaves Date and
Time Set Mode.
