Operation – KROHNE OPTISENS COND 1200 EN User Manual
Page 33
OPERATION
4
33
OPTISENS COND 1200
www.krohne.com
01/2014 - 4001967301 - MA OPTISENS COND 1200 R01 en
Step 4: calibration procedure
• After choosing the submenu cell calibration
cell calibration
cell calibration
cell calibration (step 3a) in the previous steps, continue by
pressing >>>>.
i
The signal converter demands to choose the kind of temperature compensation. You have
the options "off", "automatic" and "manual" ( refer to
Temperature compensation on page
27). Please select the same kind of temperature compensation for the calibration as for the
measurement.
• If you chose "automatic", just press ^
^
^
^. If you chose "manual", first enter the temperature and
the temperature coefficient of the measured medium using
or
and then press ^
^
^
^.
i
On the screen the message spec.conductivity
spec.conductivity
spec.conductivity
spec.conductivity appears.
• Enter the specific conductivity in µS/cm
• The signal converter now performs a measurement which takes 20 seconds.
i
On the screen the message cell constant appears
• Enter the cell constant in 1/cm.
i
The signal converter now asks store cal. value?
• Choose yes
yes
yes
yes to store the calibration values. Choose no
no
no
no to discard the results.
• Press ^
^
^
^ to confirm.
i
Prior returning to the measuring display, you are asked if the configuration should be
stored.
• Choose yes
yes
yes
yes using
or
to store the new calibration values.
i
You have completed the calibration.
• If you want to return to the measuring mode, press ^
^
^
^ several times until you reach this mode.
Step 5: re-installing the sensor
• After the calibration procedure, rinse the sensor with tap water.
• Reinstall the sensor into its assembly, refer to
Installing the sensor on page 16.
Step 6: switching back to measurement
• Deactivate the function "hold function " again.
INFORMATION!
The "stored value" is a calculated value based on the actual measurement. The signal converter
calculates this value depending on the compensation methods (temperature compensation)
chosen for the calibration. Do not change the compensation method in the time between the
measurement of the "stored value" and the input of the reference value. Otherwise this could
result in a wrong calibration.
.book Page 33 Friday, January 24, 2014 12:32 PM