Manual Temperature Compensation, Ph Non-Autolock Mode - ECD L20 Instruction Manual

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. The three point 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.
d. Calibration with manual temperature compensation in the pH
NON-AUTOLOCK mode
1. Turn the unit on. Press "Clear" key for 2 seconds, all LCD elements
will light up. The meter clears all calibration values stored in internal
memory.
2. Connect the pH electrode to the BNC connector of the unit, "MAN"
icon will light up. Press "Mode" key until "pH" icon is on. The buffer
set icon will flash
3. Rinse the pH probes in distilled water and immerse it in the first
buffer solution. Adjust 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 5 seconds to
calibrate. The unit immediately calibrates the first point, the
selected buffer remains lit up while the remaining two buffers start
to flash. The unit is ready to be sloped at the second buffer.
[Note: If the first buffer solution is 7.00 or 6.86, at this moment,
Press the "Mode" key, the unit will exit the calibration mode. Single
point calibration is complete. If the first buffer solution is 4.00, 4.01,
9.18 or 10.00, at this moment, the unit will immediately exit the
calibration mode. Single point calibration is complete.]
4. Repeat steps 4~6 of "Calibration with an ATC/Temp probe in the
pH NON-AUTOLOCK mode" for dual and three point calibration.
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