Datcon DT9502 Operating Instructions Manual page 14

Connection
4-wire mode
(see also "Application
example")
14
•
The shieldings of the cables connected to Pt100 and to
the current loop must be connected with each other.
Be careful the polarity of the cables.
The most accurate measurement can be achieved by the 4-
wire operating mode, as the cable resistances and their
possible asymmetry will not cause measuring errors.
In order to ensure accurate measurement its usage is
absolutely recommended.
DT9502
20171205-V3