8 Parameterization
192
Target start value: 20 °C (reference measurement)
Actual end value: 70 °C (displayed value)
Target end value: 80 °C (reference measurement)
Performing fine adjustment
1) Determine the lower value (as low and constant as possible) with the reference measuring device.
Example: Set furnace temperature to 20 °C.
2) Enter the display value as the actual start value and the reference value as the target start value.
Example: Enter 15 and 20.
3) Determine the upper value (as high and constant as possible) with the reference measuring device.
Example: Increase furnace temperature to 80 °C.
4) Enter the display value as the actual end value and the reference value as the target end value.
Example: Enter 70 and 80.
Characteristic line
The following diagram shows the changes in the characteristic line caused by the fine adjustment (point
of intersection with the x axis as well as the slope).
Resetting the fine adjustment
The following settings must be made to reverse the fine adjustment:
Actual start value = target start value
Actual end value = target end value
(1) Display values (2) Reference values
(3) Furnace (4) Sensor in RTD temperature probe
20°C / 80°C
20°C / 80°C
15°C / 70°C
(4)
(3)
(1)
(2)
y Display value (1) Characteristic line before fine adjustment
x Reference value (2) Characteristic line after fine adjustment
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