KROHNE OPTISENS PH 8590 - Manual (Page 25)

OPERATION
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OPTISENS PH 8590
www.krohne.com 03/2012 - 4001931401 MA OPTISENS PH 8590 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 Pt100 or 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.
• Pt100 Pt100 Pt100 Pt100: choose this option if the electrode has an integrated Pt100 temperature measurement
or if there is an external Pt100 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.
• process input A process input A process input A process input A: choose this option if there is a temperature sensor connected to input A of
the signal converter.
INFORMATION!
If you choose no compensation, the measured pH value will most likely deviate from the actual
pH value. The reason is that the pH value of a specific medium varies depending on the
temperature of the medium.
INFORMATION!
In the basic configuration the setting of the temperature compensation is Pt100. If you use a pH
sensor without Pt100/1000 than select the temperature compensation "manual" and enter the
value. Otherwise an error will be displayed.
.book Page 25 Monday, March 19, 2012 2:01 PM