4
OPERATION MODES AND KEYPAD OPERATIONS
A. Operation Modes
VisionPlus pH630FA meter has 4 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.
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
pH) or 6.86(6.86/4.00/9.18 pH).
B. Keypad Operations
Key
Operation
Mode
Duration Function
Hold
Measure
0 second
Holds current
measurement reading.
Press again to resume
measuring.
Hold
0 second Returns to Measure Mode.
Calibration
0 second Leaves Calibration Mode.
E
nter
M
ode
C
al
Measure
0 second Enters Calibration Mode.
Calibration
0 second
The “HOLD” icon is displayed,
then the unit will recalibrate the
buffer.
Measure
5 seconds
or more
Enters Buffer Select Mode.
M
ea.
E
ff
.
S
tand
S
lope
M
ode
C
lear
All
0 second Turns meter on/off.
E
nter
M
ode
C
al
Calibration
0 second
The “HOLD” icon is displayed,
then the unit will save the
calibration.
