3
Signet 8450-2 Pressure Transmitter
3.2 System Power/Loop Connections
7
6
5
Terminals
White (Gnd)
Red (IN)
Black (V+)
Signet 2450
Pressure Sensors
Signet Pressure
Transmitter
Pressure Cal:
0.0 psi >
ENTER
Transmitter
400 ft. (122 m)
3.1 Sensor Input Connections
-
+
4
3
2
1
4
3
2
1
-
+
4
3
2
1
+
-
+
-
-
+
4
3
2
1
4
3
2
1
4
3
2
1
+
-
-
+
-
+
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
Channel 1
4 to 20 mA in
Channel 2
4 to 20 mA in
System Pwr Loop -
System Pwr Loop +
AUX Power -
AUX Power +
System Pwr Loop -
System Pwr Loop +
AUX Power -
AUX Power +
Loop Input
4 to 20 mA
System Pwr Loop -
System Pwr Loop +
AUX Power -
AUX Power +
Loop Input
4 to 20 mA
System Pwr Loop -
System Pwr Loop +
AUX Power -
AUX Power +
System Pwr Loop -
System Pwr Loop +
AUX Power -
AUX Power +
Example: Two transmitters connected to PLC/Recorder with separate power supply
PLC or Recorder
Transmitter 1
Terminals
Transmitter 2
Terminals
Power
Supply
12 to 24 VDC
Connection to a PLC with built-in power supply
Internal
PLC Connection
Power
Supply
12 to 24 VDC
PLC Terminals
Transmitter
Terminals
Connection to a PLC/Recorder, separate supply
PLC or Recorder
Transmitter
Terminals
Power
Supply
12 to 24 VDC
Stand-alone application, no current loop used
Transmitter
Terminals
Power
Supply
12 to 24 VDC
Note:
AUX (auxiliary) Power is required to power the Relays.
