5
USING VISIONPLUS pH630FA
A. Power On/Off
Press the
“On/Off ”
key to turn the unit on. If the unit is running
then you can press the
“On/Off”
key to turn the unit off. The unit
will automatically turn off after 30 minutes of no key activity.
B. Select Buffer
1.
Make sure unit is in “Measure Mode”.
2.
Press the
“Cal”
key for 5 seconds, the unit will display
7.00 to indicate you successfully changed from
“6.86/4.00/9.18” set to “7.00/4.01/10.01” set.
3.
Press the
“Cal”
key for 5 seconds again, the unit will
display 6.86 to indicate you successfully changed from
“7.00/4.01/10.01” set to “6.86/4.00/9.18” set.
[
Note:
There is no need to repeat this procedure every
time unless one decides to change the buffer settings.]
C. Calibrate pH
The user can select one, two or three point pH calibration.
1.
Rinse the electrode & ATC assembly in distilled water
and immerse them in the first buffer solution. The
temperature displayed is the buffer temperature.
2.
Press
“Cal”
key to initiate calibration, the buffer icon will
be on, the “HOLD” icon will flash until the unit detects a
stable reading, When a stable reading is reached, the
“HOLD” icon will be on. Press the
“Enter”
key to save
the calibration, wait a second, the first point has been
calibrated and the unit is ready to be sloped at the
second buffer.
[
Note:
At this moment, Press the
“Hold”
key, the unit
will exit the calibration mode.
Single point
calibration is
complete.]
3.
Remove the electrode & ATC assembly from the first
buffer. Rinse them in distilled water and immerse them in
the second buffer solution. The unit will display the
temperature of the second buffer.
4.
The first buffer icons will be on, the second and third
buffer icons will flash and the “HOLD ” icon will flash
until the unit detects a stable reading, When a stable
