Emerson Rosemount Volume 1, Quick Start Manual, Page: 4 / 32

2 Wiring diagrams
Figure 2-1: Rosemount Series 68, 68Q, 78, and 58C RTD Wire Colors
Single Element Dual Element
(1)
A
A
B
B
B
B
A
C
C
D
(1) Dual element sensors are only available on Rosemount Series 68Q and 78
Sensors.
A. Red
B. White
C. Green
D. Black
Note
For three-wire systems, use one white and two red leads. Do not connect the
white leads. Insulate or terminate the unused white lead in a manner that
prevents shorting to the ground. For two-wire systems, connect both sets of
leads.
Quick Start Guide March 2021
4 Emerson.com/Rosemount