Siemens SITRANS RD200 Operating Instructions Manual page 19

Two-wire RTD input connections
①
②
③
Lead wire compensation for two-wire RTDs can be applied using the Adjust (
Offset adjustment (Page 45).
Four-wire RTD input connections
①
②
③
④
The four-wire RTD connection is similar to the three-wire. One of the leads of a four-wire
RTD is not connected, and may be clipped off.
The three-wire connection provides sufficient lead wire compensation to provide accurate
readings even with long leads.
SITRANS RD200
Operating Instructions, 05/2019, A5E47629414-AA
Signal connector
Switch position
RTD sensor
Signal connector
Switch position
NC
RTD sensor
5.5 Thermocouple and RTD connections
Connection
Adj
) menu. See
19