8
mode. Three points calibration is complete.
6. The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the three
calibration buffers. After calibration, press and hold “Mea./Eff.”
key for about 5 seconds to display the new electrode
efficiency.
c.
Calibration with an ATC/Temp probe in the pH NON-
AUTOLOCK mode.
1. Turn the unit on. Press “Clear” key for 2 seconds, all LCD
elements will lit up. The meter clears all calibration values
stored in internal memory.
2. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit:
“ATC” icon will lit up. “pH” icon is on. The “STAND” icon will
flash.
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 5 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, the “SLOPE” icon will flash. The unit is ready to
be sloped at the third buffer.
[
Note:
At this moment, press the “Mode” key, the unit will exit
the calibration mode. Dual point calibration is complete.]
5. Rinse the pH and ATC/Temp probe in distilled water and
immerse them in the third buffer solution (either 9.18/10.01 or
4.00/4.01). Allow temperature reading to stabilize, then press
“Slope” key to calibrate. Once the unit calibrates the third
point and the unit will automatically exit the calibration mode.
Three points calibration is complete.
6. The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the three
calibration buffers. After calibration, press and hold “Mea./Eff.”
key for about 5 seconds to display the new electrode
efficiency.
