Instruction Manual
pH 5/6 & Ion 6
15
3.4 Millivolt (mV) Calibration (for pH 6 only)
mV calibration is performed for ORP or Redox measurements, where you can adjust its
mV value as a base value for measurements.
1. Press
MODE
key to enter mV mode, the LCD displays “mV”.
2. Dip the ORP electrode into a known standard solution, e.g. Quinhydrone 255 and
swirl it until the reading stabilizes.
3. Press
CAL
key to enter mV calibration. The LCD shows “CA” momentarily followed
by displayed reading flashes.
4. To abort calibration press
CAL
key. Meter reverts to measurement mode.
5. To proceed calibration use
INC
key to adjust the reading to your desired value. The
maximum adjustment you can make is ± 50 mV. Pressing
INC
key continuously
allows you to scroll to the maximum allowable value and then loops back to the
minimum allowable value.
6. Press
ENTER
key to confirm calibration. The display shows “CO” momentarily and
meter reverts to measurement mode showing the current set value.
