Hamilton Electronics EPHUM011 pH ARC sen sor: 4-20 mAi nterf ace - linear, pH ARCse nsor: 4-20mA interf ace - biline ar

pH ARC SensorsModbus RTU Programmer’s Manual (EPHUM011)
624300/01 page 14/ 67
pH ARC sen sor: 4-20 mAi nterf ace - linear
-15
-10
-5
0
5
10
15
20
25
30
35
0 4 8 12 16 20 24
Current [m A]
temperature [°C]
1
2
3
4
5
6
7
8
9
10
11
pH
Temp[°C]
pH
Figure 2.4.5.6.3:Example of linear 4-20 mA output characteristicsf orpH or temperature.
Current pH Temperature
4 mA 2 -10 °C
20 mA 9 +30 °C
pH ARCse nsor: 4-20mA interf ace - biline ar
-15
-10
-5
0
5
10
15
20
25
30
35
0 4 8 12 16 20 24
Current[mA]
temperature [°C]
1
2
3
4
5
6
7
8
9
10
11
pH
Temp [°C]
pH
Figure 2.4.5.6.4:Example of bilinear 4-20 mA output characteristicsfor pH or temperature.
Current pH Temperature
4 mA 2 -10 °C
12 mA 9 +20 °C
20 mA 10 +30 °C