17
Reference Manual
00809-0100-4840, Rev CB
February 2015
What to do after completing the cabling
To maintain the weather-proof rating and hazardous area protection of the transmitter, ensure
all cable glands, blanking plugs, and seals are in good condition.
Check that the cover seal is in good condition, and not twisted or misaligned in the seal location
groove. When replacing the cover, tighten the three cover screws evenly to exert uniform
pressure on the cover seal.
3.4.2
Connecting the cable wires to the Rosemount 3101
The Rosemount 3101 is not intrinsically safe, and is for use in non-hazardous (ordinary location)
installations only.
Wire the transmitter as shown in
Important
Make sure that the power supply is off when connecting the transmitter
Table 3-2. Terminal Connections on the Rosemount 3101
Figure 3-8. Wiring Diagram for the Rosemount 3101
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
Earth Screen
Connect the cable shield/screen to ground (earth) in the control room
E
C
12 to 30 Vdc
0 Vdc
B
A
D
Summary of Contents for Rosemount 3101
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