Rosemount 333 Hart Tri-Loop Configuration With Advanced Diagnostics; Overview; Installation And Commissioning - Emerson Rosemount 3051S Series Reference Manual

Reference Manual
00809-0100-4801, Rev HA
7.11 Rosemount 333 Hart Tri-Loop Configuration with
Advanced Diagnostics
7.11.1

Overview

The Rosemount 333 HART Tri-Loop can be used in conjunction with the Rosemount 3051S with
Advanced HART Diagnostics to acquire up to three more variables via 4–20 mA analog signals. The
selectable process variables are Pressure, Temperature, Scaled Variable, Standard Deviation, Mean, or
Coefficient of Variation.
7.11.2

Installation and commissioning

Below are the four major steps to commission the Rosemount 3051S and Tri-Loop. Further detail on
these steps can be found in the Rosemount 333 HART Tri-Loop
1. Check the Rosemount 3051S with Advanced Diagnostics variable mapping and remap as necessary to
assign the three variables intended to be the Tri-Loop output. Take note of the variable information
including variable, variable name, and variable units as it will be necessary to duplicate this exactly in
the Tri-Loop for proper operation. Some useful variables for process diagnostics include Standard
Deviation, Mean, Coefficient of Variation, and Module Temperature.
Note
The measured pressure will continue to be reported as a 4–20 mA value via the primary variable output.
2. Connect the Rosemount 3051S with Advanced Diagnostics to the Rosemount 333 Tri-Loop. The
Rosemount 3051S with Advanced Diagnostics 4–20 mA output connects to the Rosemount 333
Tri-Loop Burst Input. See
Figure 7-28. Rosemount 333 HART Tri-Loop Wiring Diagram
HAZARDOUS
Rosemount 3051S with
Advanced Diagnostics
.
Advanced HART Diagnostic Suite
Figure
DIN
AREA
Rail Mounted
HART Trip-Loop
Ch. 3
Ch. 2
Ch. 1
HART Burst Command
3/
Analog Output
Intrinsically Safe
Barrier
7-28.
Each Tri-Loop
Channel
receives
power from
Control Room
Burst Input Channel 1 must
to Tri-Loop be powered for
the Tri-Loop to
operate
> _
250 Ω
RL Device
receives power
from Control
Room
Control Room
NON HAZARDOUS AREA
Advanced HART Diagnostic Suite
Reference Manual.
October 2018
135