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8 Parameterization
Target start value: 20 °C (reference measurement)
Actual end value: 70 °C (displayed value)
Target end value: 80 °C (reference measurement)
(1)
Display values
(3)
Furnace
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).
y
Display value
x
Reference value
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
192
(4)
20°C / 80°C
(3)
(2)
(4)
y
80
70
(2)
20
15
20
(1)
(2)
15°C / 70°C
(1)
20°C / 80°C
(2)
Reference values
Sensor in RTD temperature probe
(1)
x
80
Characteristic line before fine adjustment
Characteristic line after fine adjustment
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