4.1.2 Connect the cable(s) to the transmitter
Note
• The Rosemount 3101 and 3102 are not intrinsically safe and are for use
in non-hazardous (Ordinary Location) installations only.
• If HART communications are required (available on the Rosemount 3102
and 3105), a 250 Ohm (minimum), 0.25 W load resistor must be
installed in the loop.
• When using the Rosemount 3102 or 3105 transmitter with a Rosemount
3490 Series Control Unit, this resistor is not required.
Figure 4-1: Wiring Diagram for Rosemount 3101
A.
Maximum cable length is 9,750 ft. (3,000 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 mm
2
(24 SWG/23
AWG); Maximum: 1.5 mm
2
(16 SWG/18 AWG)
E.
minimum of 12 Vdc is required at the transmitter for it to operate
August 2019 Quick Start Guide
Quick Start Guide 11
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