KROHNE OPTISENS PH 9500 - Manual (Page 27)

OPERATION
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OPTISENS PH 9500
www.krohne.com 08/2012 - 4001929601 MA OPTISENS PH 9500 R01 en
4.3 Calibration
4.3.1 Temperature compensation
There are three basic options for temperature compensation:
• automatic: the signal converter will automatically compensate temperature influences using
the information of a Pt100 or Pt1000 temperature sensor.
• 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: temperature compensation is disabled.
The menu for the type of temperature compensation offers the following options:
• Pt1000: choose this option if there is an external Pt1000 temperature sensor connected to the
signal converter.
• Pt100: choose this option if the sensor has an integrated Pt100 temperature measurement or
if there is an external Pt100 temperature sensor connected to the signal converter.
• manual: choose this option if there is no integrated or external temperature sensor
connected to the signal converter.
• 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.