7
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 to start calibration. The “WAIT” icon
will flash unit the meter detects a stable reading. Once the
meter calibrated the first point, the selected buffer icon will 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
temperature reading to stabilize. Press
“Slope/Enter”
. The
“WAIT” icon will flash until the meter detects a stable reading.
Once the meter calibrated the second point, the selected
icons of the two buffers lit up and the remaining buffer starts
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.
b. Calibration with manual temperature compensation in the
pH-AUTO LOCK mode.
1.
Turn the unit on. In pH-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
“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 meter,
the “MAN” icon will lit up. The “pH” and “AUTO” icons will also
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
