IM 12D08N05-01E
5-2
<5. MENU STRUCTURE COMMISSIONING>
5.2 Temperature setting
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Temperature Element
Selection of the temperature sensor used for compensation. The default selection is the
Pt1000 Ohm sensor, which gives excellent precision with the two wire connections used.
The other options give the flexibility to use a very wide range of other sensors.
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Temperature Unit
Celsius or Fahrenheit temperature scales can be selected to suit the user’s preference.
When the unit is changed all temperature related parameters and settings will be
recalculated.
5.3 Temperature compensation
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Compensation
Two types of methods can be used here.
Automatic when a temperature element is used. Select one of the Temp. elements used.
The other is a manual set temperature. The manual temperature that represents the
process temperature must be set here.
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Reference Temperature
Choose a temperature to which the measured conductivity value must be compensated.
Normally 25°C (77ºF) is used, therefore this temperature is chosen as default value.
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Method
TC
In addition to the temperature coefficient calibration routine it is possible to adjust the
compensation factor directly. If the compensation factor of the sample liquid is known from
laboratory experiments or has been previously determined, it can be introduced here.
Adjust the value between 0.00 to 3.50 % per °C. In combination with reference temperature
a linear compensation function is obtained, suitable for all kinds of chemical solutions.
NaCl
Temperature compensation according NaCl curve. See appendix 1 for values.
Matrix
The SC450G is equipped with a matrix type algorithm for accurate temperature
compensation in various applications. Select the range as close as possible to the actual
temperature/concentration range. The SC450G will compensate by interpolation. If user
defined 1 or user defined 2 is selected, the temperature compensation range for the
adjustable matrix must be defined.
See Appendix 2 for matrix interpolation.
NOTE
Extra information on temperature compensation is given in appendix 1.
