Operation; On / Off; Set Date And Time; Select Buffer Solutions - PCE Instruments PCE-PH 23 User Manual

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Operation

4.1

On / off

Press the HOLD key for 2 seconds or longer. The instrument will enter measurement mode.
To switch off the meter, press the HOLD key again for 2 seconds. The instrument will turn off
automatically when no key has been pressed for 10 minutes.
4.2

Set date and time

1. Press the "CAL" key for 10 seconds to start
date and time setting mode
2. Press the "HOLD" key to select the date or time
value
3. Press the "STORE" or "SCROLL" key to
increase or decrease value
4. Press the "CAL" key for 2 seconds
Exit and return to measuring mode
4.3

Select buffer solutions

1. Press "SCROLL" key for 5 seconds to start
buffer selection mode
2. Press "SCROLL" key again to select the buffer
solution set:
7.00 for (7.00/4.01/10.01) or
6.86 for (6.86/4.00/9.18)
3. Press "STORE" for 2 seconds
Exit and return to measuring mode
4.4

pH value calibration

1. Press the "CAL" key for 2...3 seconds to start
calibration mode
2. Immerse the electrode in the 7.00 or 6.86 buffer
solution. "WAIT" is displayed.
3. When the "WAIT" indicator disappears, the
calibration for this value is finished.
4. Press "CAL" to complete the 1-point calibration
or
5. repeat steps 2 and 3 with pH 4.01/4.00 or
10.01/9.18 for 2-point calibration
6. Press "CAL" to complete the 2-point calibration or
7. repeat step 5 for 3-point calibration
8. Automatic return to measuring mode
Note: Clean the electrode with distilled water before each change of calibration solution. For
accurate measurement results, it is recommended to perform pH calibration weekly and after
each change of electrode.
© PCE Instruments
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