- 6 -
•
To adjust the pH 7 default value, press the
TEMP.C
button again. The upper display will
show "7.00" and the lower display will show the
PH 7 default calibration value (Fig.4). Use the
UP
and
DOWN
buttons to adjust the value.
•
To adjust the pH 10 default value, press the
TEMP.C
button again .The upper display will
show "10.00" and the lower display will show the
pH 10 default calibration value (Fig.5). Use the
UP
and
DOWN
buttons to adjust the value.
Press the
TEMP.C
button again to exit.
NOTE: To skip any of the above procedures, press the
Temp.C
button twice.
The pH calibration values you set will become the default values. This is
convenient when pH 4, pH 7, and pH 10 buffer solutions are not available.
2. Chemical Calibration of the Meter and Electrode (buffers required)
Buffer solutions and a pH electrode are needed to perform the following
procedures.
Two Point Calibration
•
Connect the PH electrode to the
BNC SOCKET.
•
Ensure that the temperature setting is adjusted to the temperature of the
pH buffer solution. See TEMPERATURE COMPENSATION on page 5.
•
Press the
PH/MV
button and select the pH mode. "PH" is displayed on
the LCD.
PH 7 Calibration
•
Rinse the electrode with distilled water and immerse the electrode into the
pH7 buffer solution.
•
Press the
CAL
button. The upper display
flashes "CAL” and the lower display shows
the default calibration value (Fig.6).
•
After approximately 5 seconds, the meter
calibrates itself automatically. The upper
display will show the calibrated value, the
lower display will show temperature (Fig.7).
PH 4 or PH 10 Calibration
•
Rinse the electrode with distilled water and
immerse the electrode in the pH4 or pH10
buffer solution.
•
Press the
CAL
Button. The upper display
Fig.6
CAL
7.00
See Fig.1, Pg.4 for inputs & button locations
Fig. 4
PH
7.00
07.12
Fig. 5
PH
10.00
10.02
Fig.7
7.00
25.00
