37
TEMPERA
TURE CALIBRA
TION (for technical personnel only)
• Press
CFM
to confirm.
• The second expected calibrated point is displayed.
• Immerse the pH probe including temperature sensor into the second vessel as close as possible
to the reference thermometer. Allow a few seconds for the probe to stabilize.
• Use the / keys to set the calibration point value to that of the hot water.
• When the reading is stable and within range of the selected calibration point,
CFM
functional key
is displayed.
• Press
CFM
to confirm. The instrument returns to measurement mode.
Note: Use / keys to change calibration point if necessary (±10.0
°
C) around the
point. If the reading is not within range of the selected calibration point, “Wrong”
message will blink. Change the pH probe including temperature sensor and restart calibra-
tion.
