40
MENU
Three-Point
• Follow Two-Point calibration steps and press
Next
when prompted.
• Immerse the pH probe in the third calibration buffer. The buffer solution will be recognized and
displayed flashing.
• 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. A confirmation screen
is displayed next, with “DONE” displayed on last LCD line.
Notes:
One-point calibration evaluates electrode offset whereas a two- or three--point calibration
evaluates both electrode offset and slope.
If
Next
is selected, to continue with a two- or three-point calibration, the buffer value proposed
next is displayed flashing, until the probe is immersed in the selected buffer solution. User can
select from any of the buffer solutions not yet used for calibration.
11.1.1.2. pH Process Calibration
Prior to performing a process calibration, use a calibrated portable pH meter to determine the pH of
the process and write down the value.
pH process calibration is a single point calibration, performed while the probe remains installed in the
process. The value can be set ± 0.5 pH around measured pH.
• Press
CAL
, to enter calibration mode.
• At prompt, enter the passcode.
• Once unlocked, press
CAL
again.
• Press
Process
, to enter process calibration.
• Press the
keys to adjust the value to the one determined with the hand held meter.
• When the reading is stable,
CFM
is available. Press
CFM
, to save the calibration.
