9
sloped at the second buffer if the first buffer solution is
6.86 or 7.00 pH.
[
Note:
At this moment, press the
“Mode”
key, the unit will
exit the calibration mode. Single point calibration is
complete.
To continue with two or more point calibration, the first
buffer solution has to be either 7.00 or 6.86 pH.]
e. Repeat steps
“e”
of “
Calibration with an ATC/Temp
probe in the pH-AUTOLOCK mode”
for 2 to 5 point
calibration.
f.
The unit calculates and compensates for the pH electrode
slope deviation corresponding to the values of the
calibrated buffers. After calibration, press and hold
“Mea./Eff.”
key for about 5 seconds to display the new
electrode efficiency and offset value.
3. Calibration with an ATC/Temp probe in the pH NON-
AUTOLOCK mode.
a. Turn the unit on. In pH mode, press
“Set/Clear”
key for 5
seconds, all LCD elements will lit up. The meter clears all
calibration values stored in internal memory.
b. Connect the pH electrode to the BNC connector and the
ATC/Temp probe to the ATC/Temp connector of the unit.
c. Press
“Mode”
key for the LCD to display pH and the
AUTOLOCK annunciator is off. “ATC” icon will lit up, “pH”
icon is on. The "CAL" icon will begin to flash.
d. Rinse the pH and ATC/Temp probes in distilled water and
immerse them in the first buffer solution. Allow
temperature reading to stabilize. Then press and hold
“Stand”
key for 2 seconds to calibrate, the unit
immediately calibrates the first point, the selected buffer
remains lit up while two other selectable buffers start to
flash. The unit is ready to be sloped at the second buffer if
the first buffer solution is 6.86 or 7.00 pH.
[
Note:
At this moment, press the
“Mode”
key, the unit will
exit the calibration mode. Single point calibration is
complete.
To continue with two or more point calibration, the first
buffer solution has to be either 7.00 or 6.86 pH.]
e. Rinse the pH and ATC/Temp probe in distilled water and
immerse them in the second buffer solution (either
4.00/4.01 pH or 9.18/10.01 pH corresponding to the
