Rosemount™ 3051S Thermal Range Expander

The Rosemount 3051S Thermal Range Expander enables transmitters to attach to high temperature processes in order to extend the thermal operating range and improve response time. Engineered with two different fill fluids, this product eliminates the need for heat tracing. This device can be used in various process applications, and allows for direct and remote mounting, Tuned-System™ assembly and balanced systems.

CHALLENGE

Applications that have extremely hot processes require specialized fill fluids that can handle high temperatures. These viscous fill fluids will gel at normal ambient temperatures and cause a differential pressure (DP) system’s response time to slow down, making it unusable. Often heat tracing is used to keep fill fluids warm, but the solution is expensive and maintenance-intensive.

OUR SOLUTION

The RosemountTM Thermal Range Expander enables DP Level systems to be direct-mounted on processes up to 410 °C (770 °F), and to provide repeatable, reliable measurements over a wide range of ambient temperatures. The solution can be installed right out of the box; it requires no additional impulse piping or heat tracing components, and eliminates extra installation costs and maintenance.

HOW IT WORKS

• Two diaphragms allow the use of two separate fill fluids.

• The device utilizes a high-temperature fill fluid to handle the hot process, and a different fill fluid to handle the ambient environment.

• Available on all Rosemount 3051SAL technologies including

Rosemount 3051S ERS™ Systems, Tuned-System™

Assemblies, Balanced Systems, In-Line and Coplanar™ direct mount or remote mount configurations.

Max. Operating Pressure

Up to 3,750psi (258,6 bar)

Process Temperature Range

Based on fill fluid – Maximum 770°F (410°C), Minimum -157°F (-105°C)

Communication Protocol

l4-20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus

Seal System Type

Direct Mount, Remote Mount, Tuned-System, Balanced System

Transmitter Connection

Welded-Repairable, All Welded

Process Connection

Flanged: ANSI/ASME, EN/DIN, GOST, & JIS Threaded: NPT, DIN, ISO

Process Wetted Material

316L SST, Alloy C-276, Alloy 400, Tantalum, Gold-plated Alloy 400, Gold-plated 316L SST, see full specs for complete list of materials

Diagnostics

Basic Diagnostics, Loop Integrity, Process Intelligence, Plugged Impulse Line

Certifications/Approvals

SIL 2/3 certified to IEC 61508 by an independent 3rd party, NACE®, hazardous location, see full specs for complete list of certifications

Features

Seal system with two different fill fluids extends the operating temperature range up to 770 °F (410 °C)
Optimized for use in various high process temperature applications and low ambient temperature conditions
Eliminates the need for heat tracing and impulse piping which reduces installation costs
Operates with process temperatures as low as -157 °F (-105 °C) and high as 770 °F (410°C) for application adaptability
Advanced diagnostics provide diagnostic coverage to detect electrical loop issues and abnormal process conditions
Tuned-Systems can reduce temperature effects by 10-20% and improve response time by 80% vs. traditional installations
Allows for direct mounting, remote mounting and balanced systems to meet various application requirements
SIL 2/3 certified to IEC 61508 (via 3rd party) and prior-use certificate of FMEDA data for safety installations