9
3. Rinse the pH and ATC/Temp probes in distilled water and
immerse them in the first buffer solution (either 7.00 or 6.86).
Allow temperature reading to stabilize, then press and hold
“STAND” key for 2 seconds to calibrate. Once the unit
calibrates the first point, the “SLOPE” icon will flash. The unit
is ready to be sloped at the second buffer.
4. Rinse the pH and ATC/Temp probe in distilled water and
immerse them in the second buffer solution (either 4.00/4.01
or 9.18/10.01). Allow temperature reading to stabilize, then
press “SLOPE” key to calibrate. Once the unit calibrates the
second point and the unit will automatically exit the calibration
mode. Dual point calibration is complete.
5. The unit calculates and compensates for the pH electrode
SLOPE deviation corresponding to the values of the two
calibration buffers. After calibration, press and hold
“MEA./EFF.” key for 5 seconds to display the new electrode
efficiency.
[
Note:
It is recommended to use a new electrode when the
efficiency value is over than 75%.]
d.
Calibration with manual temperature compensation in the
pH NON-AUTOLOCK mode.
1. Turn the unit on. Press “CLEAR” key for 5 seconds, all LCD
elements will lit up. The meter clears all calibration values
stored in the internal memory.
2. Connect the pH electrode to the BNC connector of the unit,
“MAN” icon will lit up. Press “Mode” key until “pH” icon is on.
The “STAND” icon will flash.
3. Rinse the pH probes in distilled water and immerse it in the
first buffer solution (either 7.00 or 6.86). A
djust the temperature
reading to that of the first buffer using the “
UP”
or “DOWN” keys
(0.0 to 60.0
℃
) before pressing “STAND” key. Then press and
hold “STAND” key for 2 seconds to calibrate. Once the unit
calibrates the first point, the “SLOPE” icon will flash. The unit
is ready to be sloped at the second buffer.
4. Rinse the pH probe in distilled water and immerse it in the
second buffer solution (either 4.00/4.01 or 9.18/10.01), then
press “SLOPE” key to calibrate. Once the unit calibrates the
second point and the unit will automatically exit the calibration
mode. Dual point calibration is complete.
5. The unit calculates and compensates for the pH electrode
