Instruction Manual
CON 11/110
15
4.5
Automatic Calibration (For Conductivity Calibration Only)
In the Automatic Calibration mode, the meter is capable of accepting either single-
point or up to 4 points for multi-point calibration with maximum of 1 point per specific
measurement range. Set up the automatic calibration mode in the SETUP menu
Program P9.1 by setting to “YES”. See page 51 for the set up procedure.
The following procedure describes the method for a single point calibration to a 1413
µs conductivity calibration standard. Set the single point calibration mode to on in the
SETUP menu Program 9.2 by setting to ‘YES”. See page 52 for the single point
calibration set up procedure.
1. If necessary, press the MODE key to select conductivity mode.
2. Rinse the electrode thoroughly with de-ionised water or a rinse solution, and
then rinse with a small amount of calibration
standard.
3. Dip the electrode into the calibration standard.
Immerse the electrode tip beyond the upper steel
band. Stir the electrode gently to create a
homogeneous sample. Allow time for the reading
to stabilise.
4. Press CAL/MEAS to enter conductivity calibration
mode. The CAL indicator will appear in the upper
corner of the display. The current measured
value will be displayed in the primary display
whereas the value of the calibration standard will
appear in the secondary display.
5. Press the HOLD/ENTER to confirm the
calibration value. The meter returns automatically
to the measurement mode with the new
calibrated value.
This single point calibration will apply to all the five
ranges.
As for multi point calibration, set up the multi point
calibration mode in the SETUP menu Program P9.2 by
setting to ‘NO”.
Repeat step 1 to 5 for every calibration point in each
measuring ranges using the known calibration solutions until all points have been
calibrated if necessary.
MEAS
1356
µ
S
ATC
°C
22.3
1356
µ
S
1413
1413
µ
S
ATC
°C
22.3
CAL
MEAS
READY
CAL
MEAS
HOLD
ENTER
Figure 12: Automatic
Conductivity Calibration