Emerson Rosemount 3100 Series, Reference Manual, Page: 27 / 144

Reference Manual
00809-0100-4840, Rev. BA
July 2008
3-11
Rosemount 3100 Series
Wiring for The
Rosemount 3102
The Rosemount 3102 is not intrinsically safe, and is for use in non-hazardous
(Ordinary Location) installations only.
Wire the transmitter as shown in Figure 3-8.
If HART
®
digital communications is required, see “Wiring to Allow HART
®
Communication“ on page 3-14
NOTE!
Make sure the power supply is off when connecting the transmitter.
Table 3-3.
Connections to The 3102
Figure 3-8. Wiring for The 3102
Relays
The 3102 has two integral relays which may be used for fault indication
(default) or control purposes. These relays are for
light duty and should be
used as signal relays only, with control functions being performed by external
control relays.
Connections
Terminal 1 24 Vdc
Terminal 2 0 Vdc
Terminal 3 RL1 (SPST) - see page 3-11,
Terminal 4 RL1 (SPST) - see page 3-11,
Terminal 5 RL2 (SPST) - see page 3-11,
Terminal 6 RL2 (SPST) - see page 3-11,
Terminal 7 Remote temperature sensor (if used) - see page 3-14,
Terminal 8 Remote temperature sensor (if used) - see page 3-14,
Earth Screen Connect to a ground (earth) in the control room.
Min.
12VDC
Ø 4-8mm
(0.15 - 0.31")
Twisted-pair, screened
Min. 0.22mm
2
(24 swg / 23 awg)
Max. 1.5mm
2
(16 swg / 18 awg)
0VDC
Ground in the
control room only
Max 3000m (9750ft)
+12-40VDC