9
temperature reading to stabilize. Press
“Slope/Enter”
. The
unit immediately calibrates the second point, The selected two
buffers lit up and the remaining buffer icons start to flash. Dual
point calibration is now complete. Press
“Mode”
to exit.
5. To continue with the third, the fourth and the fifth point
calibration, repeat step 4. Press
“Mode”
to exit calibration
mode when the desired calibration points are completed.
6.
The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the calibrated
buffers. After calibration, press and hold
“Mea./Eff.-”
for about
5 seconds to display the new electrode efficiency and offset.
d. Calibration with manual temperature compensation in the
pH NON-AUTOLOCK mode.
1. Turn the unit on. In pH-NON-AUTOLOCK mode, press
“Set”
to enter the buffer set selection screen. Use
“Up”
or
“Down”
to select the preferred buffer set. Press
“Slope/Enter”
to save
the selected buffer set and enter into the hold/clear selection
screen. Use
“Up”
or
“Down”
to select “CLr”. Press
“Slope/Enter”
. The meter will clear all previously stored
calibration values and is now ready for fresh calibration.
2. Connect the pH electrode to the BNC connector of the unit,
“MAN” and “pH” icons will lit up. The "CAL" icon will begin to
flash. The meter is now ready for calibration.
3. Rinse the pH probes in distilled water and immerse it in the
first buffer solution (to perform 2 to 5 point calibration, the first
calibration point must be 6.86/7.00). Adjust the temperature
reading to that of the first buffer using
“Up”
or
“Down”
(0.0 to
60.0
℃
). Then press and hold
“Stand”
for 2 seconds to
calibrate. The unit immediately calibrates the first point, The
selected buffer icon remains lit up while the remaining buffer
icons start to flash. One point calibration is now complete.
Press
“Mode”
to exit.
4. Repeat steps 4 of “
Calibration with an ATC/Temp probe in
the pH NON- AUTOLOCK mode”
for 2 to 5 point calibration.
Press
“Mode”
to exit calibration mode when the desired
calibration points are complete.
5. The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the calibrated
buffers. After calibration, press and hold
“Mea./Eff.-”
for
about 5 seconds to display the new electrode efficiency and
offset.
