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When set to the square law scale, the calibrator takes the square root of the input and displays the result as a percentage.
For example, if the calibrator is connected to the output of a differential pressure transmitter, it displays a result
proportional to the flow rate.
If the input current x varies between a and b, the scale is set according to the formula:
In the case of the 0-20 mA range, the scale curve is as follows:
In the case of the 4-20 mA range, the scale curve is as follows:
The CALYS 1500 displays in the window details of the selected configuration using the following icons:
: to show loop power supply off
: to show loop power supply on
: to show square law scale
Measurement on channel V1
) (
(
x
=
+
−
y
a
b
a
(
b
20
18
16
14
12
10
8
6
4
2
0
0
5
10
x (mA)
20
18
16
14
12
10
8
6
4
2
0
0
5
10
x (mA)
)
−
a
)
−
a
15
20
15
20
NTA47271-300A2
B
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