Rosemount 333 Specifications

Rosemount® 333 HART® Tri-Loop™

Product Data Sheet

September 2015

00813-0100-4754, Rev GB

HART-to-Analog Signal Converter

 Convert a digital HART signal into three additional analog signals

 Easy to configure and install

 Accessory product for multivariable instruments

 Available as either high-alarm or low-alarm device

Rosemount 333

HAZARDOUS AREA

Intrinsically Safe Barrier

Rosemount 3051S

MultiVariable

Transmitter

DIN
Rail Mounted
HART Tri-Loop

Ch. 3

Ch. 2

Ch. 1

Burst Input
to Tri-Loop

RL 250 

HART Burst Command 3/
Analog Output

Control Room

Device
receives power
from Control Room
for Primary Variable
Loop

Channel 1 must be
powered for the
Tri -Loo p to oper ate

Each Tri-Loop
Channel receives
power from
Control Room

NON HAZARDOUS AREA

HART Tri-Loop HART-to-Analog Signal Converter

September 2015

Convert a digital HART signal into three analog signals

Convert a multivariable digital HART signal into independent
4-20 mA analog process variables using the Rosemount 333
HART Tri-Loop. Apply in control or monitoring applications to
obtain up to three additional analog outputs without
additional process penetrations.

Accessory product for multivariable instruments

™

For use with the Rosemount 3051S MultiVariable

, 3051S
Advanced HART Diagnostics, and 3144P products. When
used with the 3051S MultiVariable Transmitter, the 333 HART
Tri-Loop allows possible outputs of Differential, Absolute or

Easy to configure and install

The 333 HART Tri-Loop is easy to configure and maintain
using the 475 Field Communicator. AMS
provides easy PC-based user configuration. Installation is
quick and easy with three DIN rail mount options and
electrically isolated analog output channels for flexible
grounding.

Available as either high-alarm or low-alarm device

Tri-Loop alarm channels are factory configured. All channels
alarm if the attached device indicates a sensor failure or

transmitter malfunction.
Gage pressure, Process Temperature, Mass or Volumetric
Flow, Energy Flow, Totalized Flow, and Sensor Module
Temperature. When used with the 3051S Advanced HART
Diagnostics, possible outputs include Pressure, Sensor
Module Temperature, Scaled Variable, Standard Deviation,
and Mean. When used with the Rosemount 3144P, possible
outputs include Sensor 1, Sensor 2, Differential and
Transmitter Terminal Temperature.

Figure 1. Example Tri-Loop Installation with Rosemount 3051S MultiVariable Transmitter

®

Device Manager

Contents

Ordering Information ................................................... 3

Specifications ..............................................................3

2

Dimensional Drawings ..................................................5

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