KROHNE OPTISENS COND 1200 EN - Manual (Page 27)

OPERATION
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OPTISENS COND 1200
www.krohne.com 01/2014 - 4001967301 - MA OPTISENS COND 1200 R01 en
4.3 Calibration
4.3.1 Temperature compensation
There are three basic options for temperature compensation:
• automatic: automatic: automatic: automatic: the signal converter will automatically compensate temperature influences using
the information of a Pt1000 temperature sensor.
• manual: manual: manual: manual: the signal converter will compensate temperature influences using a manually
entered value; this option only makes sense if the temperature of the measured medium is
quite constant.
• off: off: off: off: temperature compensation is disabled.
The menu for the type of temperature compensation offers the following options:
• Pt1000 Pt1000 Pt1000 Pt1000: choose this option if there is an external Pt1000 temperature sensor connected to the
signal converter.
• manual manual manual manual: choose this option if there is no internal or external temperature sensor connected
to the signal converter.
After starting-up the signal converter, the measuring screen appears. This is the standard
screen which is displayed automatically in the normal operating mode. If you are in this mode
and you want to adjust the temperature compensation, you have to perform the following steps:
C1.23.2 temperature Menu for setup of manual temperature (manual temperature
measurement).
C1.23.3 temp. coefficient Menu for setup of temperature coefficient (manual temperature
measurement).
C1.23.4 spec. conductivity Enter the conductivity of the calibration fluid.
Menu for preparation of measurement:
• Put probe into calibration fluid
• Wait until measurement is stable.
• Press enter to proceed.
Wait until concentration is measured.
C1.23.5 cell constant Enter cell constant.
Check slope, press enter, decide whether to store or to discard calibration
parameter.
CAUTION!
If you choose for measurement the temperature compensation "linear" than choose between
"automatic" or "manual" for the temperature compensation during calibration. If you choose for
measurement the temperature compensation "off" than choose also "off" for the temperature
compensation during calibration.
Level Designation / function Settings / descriptions
INFORMATION!
If you choose no compensation, the measured conductivity will most probably deviate
considerably from the actual conductivity. The reason is that the conductivity of a specific
medium varies depending on the temperature of the medium.
.book Page 27 Friday, January 24, 2014 12:32 PM