Sample Measurement; Ph Measurement; Mv Measurement; Temperature Measurement - OHAUS AB23PH Instruction Manual

EN-12
After all the calibrations are finished, the meter will display electrode condition (
, slope and offset) for 3 seconds, and then return to the measurement screen.
4.2

Sample measurement

4.2.1

pH measurement

1 Place the pH electrode in the sample. Stir for 5 seconds; wait for 30 seconds.
2 Press the Read/Enter button to start the pH measurement,
display and is blinking during measurement.
3 When the meter reaches endpoint (
blinks 3 times and freezes on the display.), it will display the pH value and the
temperature.
Note: in Continuous End Point Mode, you need to press the Auto-Stop button to
manually end the measurement.
4.2.2

mV measurement

1 Press the pH/mV button to switch between pH measurement mode and mV
measurement mode.
2 Follow the same procedure as for pH measurement to perform mV measurement.
4.2.3

Temperature measurement

For better accuracy, we recommend to use either a built-in or a separate temperature
electrode.
If a temperature electrode is used, ATC and the sample temperature are

displayed.
 If the meter does not detect a temperature electrode, it automatically switches to
the manual temperature compensation mode and MTC appears. MTC temperature
should be set.
Note: the meter accepts NTC 30 kΩ temperature sensor. ATC (Auto Temperature
Compensation) or MTC (Manual Temperature Compensation), the Temperature
Compensation only corrects for the change in the output of the electrode, not for the
change in the actual solution. This means the meter corrects the signal (mV) from the
electrode to get a more accurate pH value according to the real temperature.
AB23PH Bench pH Meter
blinks 2 times then disappears;
, ,
appears on the