121 Measuring with pH & ORP Probes
5. Press CLR, to delete a previous calibration or Process, to enter process calibration.
6. When the reading is stable, CFM is displayed. Press CFM, to save.
“Wait” is displayed at the bottom of the LCD screen until calibration is saved.
After the first point is accepted, “Calibration point is accepted and saved” is displayed.
7.
Select Next, to continue with a two‑point calibration or Exit, to save the calibration and return to the menu.
Two‑Point
1. After completing the one‑point calibration, press Next to continue calibrating in a second buffer.
2. Immerse the pH probe in the second calibration buffer.
The buffer solution is 4.01 pH, displayed flashing, but will change to the buffer used once recognized.
3.
When the buffer is recognized and the reading is stable, the buffer value stops flashing and CFM is
displayed. Press CFM, to save.
“Wait” is displayed at the bottom of the LCD screen until calibration is saved.
After the second point is accepted, “Calibration point is accepted and saved” is displayed.
4. Select Next, to continue with a three‑point calibration or Exit, to return to the menu.
Three‑Point
1. Follow two‑point calibration steps and press Next when prompted.
2.
Immerse the pH probe in the third calibration buffer. The buffer solution will be recognized and displayed
flashing.
3. When the reading is stable, the buffer value stops flashing and CFM is displayed. Press CFM, to save.
“Wait” is displayed at the bottom of the LCD screen until calibration is saved.
“DONE” confirmation message is displayed on last LCD line.
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