8
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 “WAIT” icon will flash until the unit detects a
stable reading.
4.
Once the unit calibrated the first point, the selected buffer
remains lit up while two other selectable buffers start to flash.
One point calibration is now complete. Press
“Mode”
to exit.
5.
Repeat steps 4 and 5 of “
Calibration with an ATC/Temp
probe in the pH-AUTOLOCK mode”
for 2 to 5 point
calibration. Press
“Mode”
to exit calibration mode when the
desired calibration points are complete.
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.
c. Calibration with an ATC/Temp probe in the pH NON-
AUTOLOCK mode.
1.
Turn the unit on. In pH NON-AUTOLOCK mode, press
“Set”
to enter the buffer set selection mode. Use
“Up”
or
“Down”
to select the preferred buffer set. Press
“Slope/Enter”
to
save the selected buffer set and enter the hold/clear selection
screen. Use the
“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 and the
ATC/Temp probe to the ATC/Temp connector of the meter.
The “ATC” and “pH” icons will lit up. The "CAL" icon will begin
to flash. The meter is now ready for calibration.
3.
Rinse the pH and ATC/Temp probes in distilled water and
immerse them in the first buffer solution (to perform 2 to 5
point calibration, the first calibration point must be 6.86/7.00).
Allow temperature reading to stabilize. Press and hold
“Stand”
for 2 seconds. The unit immediately calibrates the
first point. The selected buffer icon remains lit up while two
other selectable buffer icons start to flash. One point
calibration is now complete. Press
“Mode”
to exit.
4. To continue with the second point calibration, rinse the pH
and ATC/Temp probe in distilled water and immerse them in
the second buffer solution (either 4.00/4.01 pH or 9.18/10.01
pH corresponding to the flashing number on display). Allow
