The Rosemount 5408 is a two-wire, non-contacting radar level transmitter designed for continuous measurement of liquids and solids. Its frequency-modulated continuous-wave (FMCW) technology provides a strong radar signal, while Smart Echo Supervision™ helps identify the true product surface in vessels with internal obstructions or demanding process conditions.
With a configurable range of antenna and process connection options, the Rosemount 5408 can be adapted to storage tanks, process vessels, and solids silos. Built-in diagnostic tools, including Smart Meter Verification and guided proof-testing functions, help simplify commissioning and maintenance. A separate 5408 version is available for safety instrumented applications.
Key Features
- 26 GHz FMCW radar technology for reliable liquid and solids level measurement
- Smart Echo Supervision™ to distinguish actual level echoes from interference
- Advanced onboard diagnostics for device health monitoring and preventative maintenance
- Smart Meter Verification for checking transmitter health without interrupting the process
- Guided proof-testing tools to support verification and maintenance workflows
- Multiple antenna and process connection options for different vessel designs and process conditions
- SIL-certified 5408 version for applicable safety instrumented systems
- Optional wireless connectivity using a compatible THUM™ Adapter
Suitable Applications
- Chemical storage tanks
- Oil and gas processing
- Petrochemical plants
- Liquid storage and process vessels
- Mixing and blending tanks
- Applications with foam, vapor, or condensation
- Solids silos and bulk material storage
- Overfill prevention systems
- Safety instrumented level measurement
Technical Highlights & Selection Considerations
- Measurement performance: The ultra-accuracy version offers reference accuracy of ±1 mm, while the standard performance version offers ±2 mm. Confirm the selected performance class and operating conditions.
- Measurement medium: Choose the liquid, solids, or combined measurement configuration according to the application.
- Antenna selection: Cone, process seal, hygienic, and other antenna options are available depending on model configuration and process requirements.
- Difficult process conditions: FMCW technology and Smart Echo Supervision™ help address false echoes, turbulence, foam, dust, and condensation. Correct installation remains important.
- Safety requirements: The 5408 version is certified for SIL 2 applications. Confirm the applicable safety certification and requirements for the complete safety function.
- Communication: HART is available, and compatible wireless connectivity can be provided using a THUM™ Adapter. Verify protocol and output compatibility before ordering.
- Hygienic applications: Certain configurations offer hygienic connections and relevant approvals. Confirm the exact antenna, connection, and certification requirements.
Frequently Asked Questions
Q1: What is the Rosemount 5408 used for?
It provides continuous, non-contacting radar level measurement for liquids and solids in storage tanks, process vessels, and silos.
Q2: What is the measurement accuracy of the Rosemount 5408?
The ultra-accuracy version has a reference accuracy of ±1 mm, while the standard performance version has a reference accuracy of ±2 mm.
Q3: Can the Rosemount 5408 measure solids?
Yes. A solids measurement configuration is available for applications such as silos, bins, and bulk material storage. Confirm suitability based on the material, vessel geometry, and required measurement range.
Q4: What is Smart Echo Supervision™?
It is an echo-processing technology that tracks radar echoes and helps distinguish the true product surface from false echoes caused by internal obstructions and other interference.
Q5: Is the Rosemount 5408 suitable for safety applications?
The Rosemount 5408 version is certified to IEC 61508 for SIL 2 applications. The complete safety function must be designed and validated according to applicable requirements.
Q6: Can the Rosemount 5408 be used in applications with heavy condensation or aggressive media?
Yes. A process seal antenna is available for demanding applications involving heavy condensation or aggressive media. Confirm material compatibility and the required process connection for the specific installation.
