ECD L20, Инструкция по эксплуатации, Страница: 10 / 20

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If the first buffer solution is 4.00, 4.01, 9.18 or 10.00, at this moment,
the unit will automatically exit the calibration mode. Single point
calibration is complete.]
4. Repeat steps 4~6 of “Calibration with an ATC/Temp probe in the
pH-AUTOLOCK mode” for the dual and three point calibration.
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 light 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 light
up. Press “Mode” key to select “pH” mode. “pH” icon is on. One of
the buffer in the pre-selected buffer set will start to flash.
3. Rinse the pH and ATC/Temp probes in distilled water and immerse
them in the first buffer solution. Allow temperature reading to
stabilize, 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 automatically exit the calibration mode. Single point
calibration is complete.]
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, to 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).