Two-Point Calibration - Horiba Scientific LAQUAtwin B-771 Instruction Manual

5.3

Two-point calibration

1.
Set "Two-point calibration" (refer to page 18).
2.
Open the protection cover and put some drops
of the 1.41 mS/cm standard solution into the
measurement cell.
Washing the sensor with the standard solution
beforehand may provide more accurate calibration.
3.
Close the protection cover and press the CAL
switch for over 2 seconds.
and
displayed.
After the calibration is completed,
stop blinking and light steadily.
4.
After the calibration for 1.41 mS/cm is
completed, open the protection cover and
remove the 1.41 mS/cm standard solution,
and remove moisture.
5.
Put some drops of the 12.9 mS/cm standard
solution (sold separately) into the measurement
cell.
Washing the sensor with the standard solution
beforehand may provide more accurate calibration.
6.
Close the protection cover and press the CAL
switch for over 2 seconds.
and
displayed.
After the calibration is completed,
stop blinking and light steadily.
7.
Clean the sensor with tap water and
remove moisture.
8.
Press the MEAS switch for 0.5 seconds to enter the measurement
mode and prepare for measurement.
blink and the calibration value is
blink and the calibration value is
and
and
11
Protection
cover
Protection
cover