3 Wire RTD Connections

RTD Sensor Connections

Proper connections for all three types of RTD sensor (2-wire, 3-wire, and 4-wire) to a user configurable transmitter are shown

Three Wire RTD Circuit

What is a Three-wire RTD ?

A compromise between two-wire and four-wire RTD connections is the three-wire connection, which looks like this: In a three-wire RTD