13
Allow for the electrode to adjust and reading to stabilize (hourglass symbol
turns off).
On the pH screen are displayed:
• pH reading with the selected resolution.
• Temperature reading in the selected unit (ºC or ºF).
• Temperature compensation mode (MTC - manual, ATC - automatic).
While in MTC mode the indicate that the temperature can be
manually changed using
ARROW
keys.
• Electrode condition during the calibration day.
• The buffers used in last pH calibration (if feature is enabled in
SETUP
).
• Battery level indicator.
• Available functional keys in according with the model.
In order to take more accurate pH measurements, make sure that the
instrument is calibrated (see page 16 for details).
It is recommended that the electrode is always kept wet and rinsed thoroughly
with the sample to be measured before use.
The pH reading is directly affected by temperature. For accurate pH measure-
ments, temperature must be taken into consideration. If the sample tempera-
ture is different from the temperature at which the pH electrode was kept, allow
a few minutes to reach thermal equilibrium.
To use the instrument's Automatic Temperature Compensation feature, submerge
the temperature probe into the sample as close to the electrode as possible and
wait for a few seconds.
If manual temperature compensation (MTC) is desired, the temperature
probe must be disconnected from the instrument
.
The display will show the default temperature of 25 ºC, the last measured
temperature reading, or the last set temperature, with the
“MTC”
indication.
The
“MTC”
indication and the symbol light up on the LCD to indicate that
the instrument is in MTC mode and the
ARROW
keys can be used to enter the
desired temperature value.
Note
: When in MTC the user can press and hold the
ARROW
keys, and the
instrument will start incrementing /decrementing the temperature value.
The instrument keeps measuring and the display is updated periodically.
