13
The “ATC” icon will lit up.
b. Press
“Mode”
key until “pH”, “AUTO”, “ATC”, “buffer”,
“WAIT” icons lit up.
c. Rinse the pH electrode and ATC/Temp probe with distilled
water and immerse in the sample to be measured. Remove
any air bubbles trapped around the probe by shaking or
stirring the probe.
d. Press the
“Mea./Eff.”
key. The “WAIT” icon will start flashing.
The unit is waiting for a stable reading. The display will track
the pH value as sensed by the pH electrode and the
ATC/Temp probe.
e. When the “WAIT” icon disappears and the “LOCK” icon
appears, the meter will not respond to further changes from
the sample. The pH value shown is the pH value of the
sample at the displayed sample temperature.
[
Note:
For samples that are inherently unstable, the unit
will not AUTOLOCK. In this case, use the pH NON-
AUTOLOCK mode for measurements.]
2. Measurement with manual temperature compensation in
the pH-AUTOLOCK mode.
a. Connect the pH electrode to the BNC connector of the unit.
The “MAN” icon will lit up. Set unit to display the sample
temperature by pressing the
“Up”
or
“Down”
keys (-10.0 to
120.0
℃
).
b. Press
“Mode”
key until “pH”, “AUTO”, “MAN”, “buffer”,
“WAIT” icons lit up.
c. Repeat steps 3 to 5 of
“Measurement with an ATC/Temp
probe in the pH-AUTOLOCK mode”.
3. Measurement with an ATC/Temp probe in the pH NON-
AUTOLOCK mode.
a. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
The “ATC” icon will lit up.
b. Press
“Mode”
key until “pH”, “ATC”, “buffer” icons lit up.
c. Rinse the pH electrode and ATC/Temp probe with distilled
water and immerse in the sample to be measured. Remove
any air bubbles trapped around the probe by shaking or
stirring the probe.
