Emerson Rosemount 248 Reference Manual page 11

Reference Manual
00809-0100-4248
Figure 2-2: Sensor Connections
A. 2-wire RTD and Ω
B. 3-wire RTD and Ω
C. 4-wire RTD and Ω
D. T/C and mV
Note
Emerson provides 4-wire sensors for all single element RTDs. Use these RTDs in 3- or 2-wire
configurations by leaving the unneeded leads disconnected and insulated with electrical
tape.
Figure 2-3: RTD Lead Wire Configurations per IEC 60751
A. Single element, 3-wire
B. Single element, 4-wire
C. Dual element, 3-wire
D. Red
E. Black
F. White
G. Yellow
Note
To configure a single element, 4-wire RTD as a 3-wire system, connect only one white lead.
Insulate or terminate the unused white lead in a manner that prevents shorting to the
ground. To configure a single element, 4-wire RTD as a 2-wire system, connect matching
colored wires first and then connect the paired wires to the terminal.
Rosemount 248
Configuration
April 2024
11