6
4. If the displayed value is different from the
standard buffer that you are using, press
and hold down
HOLD
to change the value.
Each buffer value may be adjusted within a
specified range:
a. 4.00 pH may be adjusted from
3 .50 to 4 .50
b. 7.00 pH may be adjusted from
6 .50 to 7 .50 .
c. 10.00 pH may be adjusted from
9 .50 to 10 .50 .
5. When the value stabilizes, the meter will
save the value. “SA” displays.
6. “End” displays and the meter returns to
Normal Mode.
7. Rinse the probe with deionized water,
a rinse solution, or tap water.
8. Repeat steps 2-7 to calibrate the meter with
the remaining two buffer solutions.
8
PH 4.00 : 97mV..... 250mV
PH 7.00 : - 60mV..... 60mV
PH10.00 : - 250mV..... -97mV
Acceptable voltage range of each point:
5. If the probe recognizes the buffer:
If the probe successfully recognizes the
buffer, the buffer pH value (4 or 7 or 10)
will appear on the display in 2 seconds.
If the calibration buffer is not 4,7,10 but
another value, such as 7.01, just
press " " to change the value.
7. To save the calibration value:
When the electrode reads a stable value
and user stops pressing any keys, the
meter will automatically save the value
and then escape the calibration mode.
6. The adjustable cal. point range for 4.0
pH is from 3.50 to 4.50. For 7.0 pH is
from 6.50 to 7.50. For 10.0 pH is from
9.50 to 10.50
CAL ATC
F
O