Endress+Hauser ria45 Operating Instructions Manual page 10

Wiring
10
Overview of possible connection options at the device
Terminal assignment of analog inputs, channel 1 and 2 (optional)
Connection of the loop power supply
2-wire
Connection of the analog input
RTD/Resistance 2-wire
Thermocouple
Current
Connection of the relays (optional)
Relay 1
Connection of the analog output
Analog output 1
Connection of the digital output
Digital output / Open Collector
4-wire
a0010407
RTD/Resistance 3-wire
a0010581
U ≤ 1 V
a0010409
a0011934
Relay 2
a0010412
Analog output 2 (optional)
a0010416
a0010415
a0010408
RTD/Resistance 4-wire
a0010582
U > 1 V
a0010410
a0010413
a0010414
Endress+Hauser
RIA45
a0010406
a0010583
a0010411