Endress+Hauser RIA15 - Wiring; Quick Wiring Guide

RIA15 Wiring
Endress+Hauser 21
Circuit diagram / Description
2-wire sensor with
process display unit and
active barrier RN221N as
loop power supply
Y
I
1
2
3
O+
O-
RN221N
R
s
R
LED
- +
A0019576
1 Sensor
2
HART
®
primary master
3
HART
®
resistance
Optional HART
®
communication resistance module
A HART
®
communication resistance module is available as an accessory, see section
Accessories in the relevant Operating Instructions.
Mounting of the HART
®
communication resistance module see section Installation
instructions (→  13)