AOIP CALYS 50 Mode D'emploi page 110

CALYS 50 / 75 / 100
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 50 / 75 / 100 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
: To show HART compatibility.
When the values measured are near the lower limit of the range (0 mA or 4 mA) a small variation in the values measured
translates into a more significant variation for the converted values (in %) because of the square law nature of the scaling.
110 / 164 NTA47227-300A8
) (
( 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)
GETTING STARTED
)
−
a
)
−
a
15 20
15 20