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5.4
Flujo de señal
El siguiente ejemplo muestra qué parámetros influyen en el valor medido desde la entrada analógica hasta la salida analógica.
Sensor type: RTD
temperature probe
(3-wire)
Pt50
Sensor factor =
Fine calibration
Actual value
end: +860
Actual value
start: -190
The temperature after the fine calibration
appears on the display.
5 Poner en marcha el dispositivo
Analog input
Linearization: Pt100
Sensor factor: 0,5
0,5
1
390
100
18,5
50
195
390
Pt50
Value of the connected Sensor
=
= 0,5
setting for Linearization
Pt100
Analog output
Output range
Target value
+900°C
end: 900
End: 120°C
Start:0°C
Target value
-200°C
start: -200
The configured output range from
0 to 120°C will be transformed to the
output scaling from 6 to 18 mA.
120 °C
= 10 °C per mA
12 mA
Measured value offset: 10 °C
+850°C
0°C
-200°C
-200
850
... 10 °C positive offset
Signal type: 4 to 20 mA
20 mA
140°C
-20°C
4 mA
Also temperatures over and under the scaling
borders (6 bis 18 mA) will be transformed to the output.
2 mA are still remaining to achieve 140 °C on the top
and -20 °C on the bottom.
+860°C
10°C
-190°C
10 V
End: 18 mA
Start: 6 mA
Anfang: 2 V
0 V
30
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