Endress+Hauser Fieldgate FXA320, Руководство по эксплуатации

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6 Configuring the Fieldgate Fieldgate FXA320
65 Hauser
6.4.2 Analog input setup
Analog inputs can be assigned a tag, engineering units and a linearization table. The significance of
the parameters is described in Table 6-7.
Analog input setup
Table 6-7: Analog input parameters
Linearization Fig. 6-1 shows an example for a linearization of a horizontal cylindrical tank, of diameter 1.6 m to
a volume scaled to 0% to 100%. The nine linearization points are entered in the form xx.xx;yy.yy
as shown in the table, pressing Enter after every line.
Fig. 6-1: Example of linearization of a horizontal cylindrical tank
Parameter Description
Tag Enter the Device Tag that is to appear in the overview page
Scaling Unit Enter the scaling units in plain text
Scaling Range Enter the range end values in engineering units corresponding to the 4 mA and 20 mA signal
Units After
Linearization Enter the engineering units in plain text to be used after linearization
Linearization Table Enter a linearization table with maximum 16 value pairs in the form xx.xx;yy.yy
– The first and last values should correspond to the lower and upper range value
– The X values must increase monotonically: if an X value occurs twice in the list, the second
X value in the list is ignored
– The value pairs can be entered in any order. They are sorted by the Fieldgate after sending
– The linearized output value is shown as a secondary value for the device in the Overview page.
Send Press to register your changes in the Fieldgate.
Reset Press to discard any changes made since the previous send.
100
0
80
60
40
20
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Input volume %
Input level (m)
Input level (m); Input volume (%)
0.00;0.00
0.20;7.32
0.40;19.67
0.60;34.59
0.80;50.65
1.00;66.67
1.20;81.43
1.40;93.50
1.60;100.00
1.6 m