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MENU
When the electrode is immersed into buffer solution, the controller automatically recognizes the buffer
value. It is generally recommended to use 7.01 or 6.86 pH buffer as first calibration point.
One-Point
• Press
CAL
, to enter calibration mode.
• At prompt, with the password enabled, input the passcode.
• The first suggested buffer solution “7.01 pH” (if using Hanna Instruments buffer group) or “6.86
pH” (if using NIST buffer group) is displayed in the upper left of the display window.
• Immerse the pH probe approximately 4 cm (1½”) into buffer solution and stir gently. The controller
automatically recognizes the standard and the recognized buffer value is displayed on the LCD.
• Press
CLR,
to delete a previous calibration or
Process,
to enter process calibration.
• 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.
• Select
Next,
to continue with a two-point calibration or
Exit,
to save the calibration and return to
the menu.
Two-Point
• After completing the one-point calibration, press
Next
to continue calibrating in a second buffer.
• 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.
• 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. Select
Next,
to continue with a three-point calibration or
Exit
, to return to the menu.
