Table 4-5: Wiring scheme - Multiple element ER combined probe
(continued)
Junction box
(Terminal :: Pin)
Signal name
Standard cable
Multicable
Heavy-duty cable
BFOU(c)
J3 :: 2
E1B / ERM1-
Yellow
Blue4
J3 :: 3
E2A / ERM2+
Green
Black5
J3 :: 4
E2B / ERM2-
Brown
Blue5
J3 :: 7
E4A / ERM4+
Blue
Black6
4.2
Field mounting
The Rosemount 4390 Wireless Transmitter mounting bracket kit is designed
to allow simple and ergonomic installation of the instrument.
Figure 4-3: Mounting bracket kit components
A. Screw M5x12 (4x)
B. Split lock M5 washer (4x)
C. Instrument bracket (1x)
D. Screw M6x12 (4x)
E. Split lock M6 washer (4x)
F. Hex nut UNC 5/16-18 (4x)
G. Rectangular flat washer (2x)
H. Back plate (1x)
I. U-bolt 2-inch UNC 5/16-18 (2x)
The mounting bracket kit supports two options for installing the instrument:
1. Mount the instrument on a wall, rack, or flat surface.
2. Mount the instrument on a 2-inch mounting pole.
Quick Start Guide
April 2021
24
Emerson.com/Rosemount