3
I
PHscan40
Temperature Compensation
In order to obtain accurate measurement results, we recommend that
enabling the manual temperature compensation before calibration and
measurement. The tester will automatically calculate the pH slope
with inputted temperature and shows the temperature compensated
readings.
1. Press and hold the
Cal
key to enter the setup menu.
2. Press the
Enter
key until the display shows
/
or
/
.
3. Press the
Cal
key, the tester enters the temperature setting mode.
4. Press the
Cal
key again to set the temperature value.
5. Press the
Enter
key to save and press the
Meas
key to return to
the measurement mode.
•
During the setting process, press the
Cal
key once, the
setting value will increase or decrease by 0.5. Press and hold
the key, the setting value will increase or decrease by 1.
•
To exit the temperature setting without saving
changes, press
the
Meas
key.
pH Calibration
The PHscan40 tester allows 1 to 3 points calibration, we recommend
that you perform at least 2 points calibration for accurate pH
measurement, the tester will automatically recognize and calibrate to
following standard buffer values.
USA
standards
pH 4.01, 7.00, 10.01
NIST standards
pH 4.01, 6.86, 9.18
Single point calibration should only be carried out with the pH 7.00
or 6.86, otherwise calibration will not be accepted.
For better accuracy, we recommend calibrating the tester regularly.
DO NOT reuse the buffer solutions after calibration, contaminants
in
.
solution will affect the calibration and eventually the accuracy of
the
.
measurement.
Single Point Calibration
Ensure that you have selected 1 point calibration in the setup menu.
1.1 Press the
Cal
key, the tester shows pH 7.00/CAL 1.
1.2 Rinse the electrode with distilled water and place into the pH
7.00 buffer solution, stir the electrode gently to create a
homogeneous solution.
1.3 Press the
Enter
key, the tester begins the calibration. When the
reading has stabilized, the display will show
. Calibration
is completed.
