horiba B-711, Instruction Manual

Page: 18 / 34

10
5.2 One-point calibration at pH 7 (B-711/B-712/B-713)
5.3 One-point calibration at pH 4 (B-712/B-713)
1.
(For B-712 and B-713 only) Set “One-point calibration at pH 7”
(refer to page 19).
2.
Open the light shield cover and put some drops
of the pH 7 standard solution on the flat sensor
to cover the entire flat sensor.
Washing the sensor with the standard solution
beforehand may provide more accurate calibration.
3.
Close the light shield cover and press the CAL
switch for over 2 seconds.
and blink and the calibration value is
displayed.
After the calibration is completed,
and
stop blinking and light steadily.
4.
Clean the sensor with tap water and
remove moisture.
5.
Press the MEAS switch for 0.5 seconds to
enter the measurement mode and prepare
for measurement.
1.
Set “One-point calibration at pH 4” (refer to page 19).
2.
Open the light shield cover and put some drops
of the pH 4 standard solution on the flat sensor
to cover the entire flat sensor.
Washing the sensor with the standard solution
beforehand may provide more accurate calibration.
3.
Close the light shield cover and press the CAL
switch for over 2 seconds.
and blink and the calibration value is
displayed.
After the calibration is completed,
and
stop blinking and light steadily.
4.
Clean the sensor with tap water and
remove moisture.
5.
Press the MEAS switch for 0.5 seconds to
enter the measurement mode and prepare
for measurement.
Light shield
cover
Light shield
cover