The Rosemount 3408 is an industrial non-contacting radar level transmitter designed for continuous measurement and overfill prevention applications. Its focused 80 GHz radar beam supports installation in vessels with limited mounting space and internal obstructions. Available in wired and WirelessHART® versions, it offers flexible connectivity for process control and remote tank monitoring.
Key Features
- 80 GHz FMCW radar technology for non-contacting level measurement
- Measures liquids, solids and slurries
- Measuring range up to 30 m (98 ft)
- Wired version accuracy up to ±1 mm
- Smart Echo Supervision™ for automatic suppression of unwanted reflections
- Advanced diagnostics, including Smart Meter Verification and Signal Quality Metrics
- Optional Bluetooth® connectivity for configuration and maintenance
- Optional WirelessHART® communication for remote installations
- SIL 2 certified according to IEC 61508 for applicable wired configurations
- Multiple antenna options for different vessel and process conditions
Suitable Applications
- Chemical and petrochemical plants
- Oil and gas facilities
- Water and wastewater treatment
- Storage tanks and process vessels
- Silos and bulk material handling
- Liquid and slurry level monitoring
- Overfill prevention
- Remote tank monitoring
- Power generation and industrial processing
Technical Highlights & Selection Considerations
- Measurement range: Up to 30 m (98 ft), depending on the selected version and application.
- Accuracy: Wired version up to ±1 mm; WirelessHART® version up to ±3 mm.
- Radar frequency: 80 GHz FMCW radar for focused measurement in confined spaces.
- Process antenna: Select a process seal, lens or ATAP antenna according to the installation and process conditions.
- Process connection: Confirm connection dimensions, nozzle size and mounting clearance.
- Operating conditions: Verify process pressure, temperature, vapor, foam, turbulence and media characteristics.
- Communication: Choose 4–20 mA HART® or optional WirelessHART®; Bluetooth® is available on supported configurations.
- Safety certification: Confirm the required approvals. SIL 2 certification is not available on the WirelessHART® version.
Frequently Asked Questions
Q1: What is the Rosemount 3408 used for?
It provides continuous level measurement for liquids, solids and slurries in industrial tanks, vessels and silos. It can also support suitable overfill prevention and process monitoring applications.
Q2: How does the Rosemount 3408 work?
It transmits 80 GHz radar signals toward the product surface and calculates the level from the reflected signals without contacting the material.
Q3: What is the maximum measuring range?
The product family supports a measuring range up to 30 m (98 ft), depending on the version and application conditions.
Q4: Does the Rosemount 3408 support wireless communication?
Yes. A WirelessHART® version is available for remote or hard-to-access locations. Bluetooth® connectivity is also available on supported configurations.
Q5: Can the Rosemount 3408 be used for safety applications?
The wired version is available with SIL 2 certification according to IEC 61508. Verify the exact model, certification and safety requirements before specifying it for a safety instrumented system.
Q6: What information should I provide when ordering?
Confirm the required range, material being measured, process conditions, antenna type, process connection, communication protocol, display requirements and necessary approvals.
