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4. Press the “Mea.” 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 probe.
5. When the “WAIT” icon disappears, the reading is then “HOLD”
and will not respond to further changes from sample. The pH
value shown is the pH value of the sample at the set sample
temperature.
[Note: For samples that are inherently unstable, the
instrument will not AUTOLOCK. In this case, use the pH
NON- AUTOLOCK mode for measurements.]
c. Measurement with an ATC/Temp probe in the pH NON-
AUTOLOCK mode.
1. 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.
2. Press “Mode” key until “pH” icon lit up.
3. Rinse the pH electrode and ATC/temp probe with distilled
water and immerse in the sample to be measured.
4. Allow sufficient time for the display to stabilize. The instrument
will display the pH value of the sample at the displayed sample
temperature.
d. Measurement with manual temperature compensation in
the pH NON-AUTOLOCK mode.
1. Connect the pH electrode to the BNC connector of the unit.
The “MAN” icon will lit up.
2. Press “Mode” key until “pH” icon lit up.
3. Rinse the pH electrode probe with distilled water and immerse
in the sample to be measured.
4. Allow sufficient time for the display to stabilize. The instrument
will display the pH value of the sample at the set sample
temperature.
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