20
Reference Manual
00809-0100-4840, Rev CB
February 2015
Table 3-4. Terminal Connections on the Rosemount 3105
Figure 3-10. Wiring Diagram for the Rosemount 3105
A. Maximum cable length is 9750 ft. (3000 m)
B. Connect the cable shield/screen to ground (earth) in the control room
C. Cable thickness: Ø0.15 to 0.31 in. (Ø4 to 8 mm)
D. Twisted-pair, screened wires. Minimum size: 0.22 mm2 (24 SWG / 23 AWG); Maximum: 1.5 mm2 (16 SWG / 18 AWG)
E. Minimum of 12 Vdc is required at the transmitter for it to operate
Connections
Terminal 1
24 Vdc
Terminal 2
0 Vdc
Terminal 7
Remote temperature sensor (if used) - see
“Remote temperature sensor” on page 21
Terminal 8
Remote temperature sensor (if used) - see
“Remote temperature sensor” on page 21
Earth Screen
Connect the cable shield/screen to ground (earth) in the control room
E
D
0 Vdc
12 to 40 Vdc
(non I.S. application)
or
12 to 30 Vdc from
protective barrier
(I.S. application.)
C
B
A
Summary of Contents for Rosemount 3101
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