Peekel Instruments PICAS - Connection of a Voltage Signal; Connection of a 4 - 20 Ma Sensor

Peekel Instruments User manual PICAS V2.6.1
Page 17 of 59
2.2.4 Connection of a voltage signal
A voltage signal is directly connected to the signal input terminals of the channel.
5V
1mA
1
2
3
4
5
6
to chassis
V
Figure 17: Voltage signal connection
2.2.5 Connection of a 4 – 20 mA Sensor
Normally these sensors will deliver a 4 mA signal, when the measured signal is at minimal
level. This 4 mA signal is also used as a power supply for the sensor. In this case a 2 wire
connection to the sensor is used. The 24VDC supply can be used for these sensors.
5V
1mA
1
2
3
4
5
6
to chassis
24V
1
2
+
-
Active 4-20
mA sensor
Figure 15: 4 – 20 mA Sensor connection
note: make sure that the sensor can handle the 24VDC supply.