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 pH & ATC sensor 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 “WAIT” icon will flash until the unit
detects a stable reading. When a stable reading is
reached, the “WAIT” icon will hold still. Press the
“Enter” key, the “SAVE” icon will be on. 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 pH & ATC sensor 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 and second buffer icons will be on, the “WAIT”
icon will flash until the unit detects a stable reading.
When a stable reading is reached, the “WAIT” icon will
hold still. Press the “Enter” key, the “SAVE” icon will be
on. Wait a second, the second point has been calibrated
and the unit is ready to be sloped at the third buffer.
[
Note:
At this moment,
press the “Hold” key, the unit
will exit the calibration mode,
Dual points
calibration is
complete.]
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