SEN-3
SEN-3 K04/0322
page 5
7. Electrical Connection
Ensure that the power is disconnected during connection of the cable.
The electrical connection is made either via plug and pin or by cable.
The exact wiring scheme is shown on the sketches hereafter or at the type
plate of your sensor.
Attention! to the different wire systems.
Meaning of the different connector markings
UB+
positive pole of the supply voltage
OV
negative pole of the supply voltage
S+
positive pole of the output signal
S-
negative pole of the output signal
Shielding
Cable protection enclosure-earth
Pressure sensors for relative pressures with cable output are equipped with an
atmospheric pressure compensation cable. Please take this into account if you
want to extend the cable. The relative pressure sensor with pressure ranges up to
25 bar are vented due to a venting sealing between housing and plug.
The sensor could be supplied with an unregulated DC source with the specified
voltage range. The minimum supply voltage for pressure sensors with current
output, should be the minimum UB plus the minimum voltage, which is needed to
operate the external indicator or input device:
Current output
2-wire system
3-wire system
Output signal
4...20 mA
0...20 mA
Supply voltage
UB= 10 ... 30 V
DC
Permissible load
RA[Ohm] = (UB[V] - 1 0 V) / 0,02 A
Wiring scheme
see scheme
Voltage output
3-wire system
3-wire system
Output signal
0...5 V
0...10 V
Supply voltage
U
B
= 10…30 V
DC
UB = 14…30 V
DC
Permissible load
RA >5 kOhm
RA >10 kOhm
Wiring scheme
see scheme
