Note:
For accurate measurements, it is recommended that pH
calibration is preformed once a week and after replacing the
electrode.
E. Measure
Dip the meter into the test solution in the “Measure Mode”.
F. Hold Data
1. When the pH readings is
stable, press “HOLD” key
once to lock the reading.
2. Press “HOLD” key again
to unlock reading and the
unit will return to “Measure
Mode”. The unit is now
ready for another
measurement.
Note:
The unit cannot be power off in “Hold Mode”.
G. Save Data
Either in the “Hold Mode” or the
“Measure Mode”, press “STORE”
key for 2-3 seconds. The “DATA
SAVE” and “M-XX” icons will
appear indicating the reading has
been saved and stored in
memory location XX. The unit
will automatically returns to
“Measure Mode” and ready to
perform other task.
Note:
The Model pH 618N is equipped with a non-volatile
memory that can store up to 50 different sets of readings (pH,
temperature, Time and date). Non-volatile memory will be
retained even if power is lost. When all 50 memory locations
are used up, the next set of data saved will overwrite the data
stored in the first location and so on.
H. Recall and Erase Data
1. In “Measure Mode”, press “SCROLL” key 2-3 seconds,
the last set of saved data will appear.
2. By pressing the “SCROLL” key, previous saved data will
appear.
3. Press “STORE” key for 2 seconds to exit and return to
“Measure Mode”.
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