With over 50 years of experience as the inventors of radar level measurement, we have been dedicated to helping our customers solve their level measurement challenges.
Boost Operational Efficiency with Easy-to-use Radar Level Measurement
Emerson’s non-contacting radar level transmitters are designed for ease-of-use, with built-in diagnostics and the ability to detect even the smallest of level changes. They utilize powerful frequency-modulated continuous wave (FMCW) and Smart Echo Supervision™ technologies to ensure robust, reliable measurement across all tank sizes in diverse industries.
Products
Key Benefits of Non-Contacting Radar Level Transmitters
For Liquids and Solids Applications
Reliable measurements regardless of vessel type, process or environmental conditions:
Rosemount 5408: For applications with aggressive media, large solid particles and heavy powders.
Rosemount 3408: With smart functionality for application flexibility in liquids and solids.
Rosemount 3408 Wireless: Reliable measurements in remote or hard-to-reach areas.
Rosemount 1208: For simple level measurement applications.
Rosemount 1408: For hygienic level measurement applications.
Reliable Measurements
With over 50 years of expertise in radar measurement, Rosemount Non-Contacting Radar Transmitters provide cutting-edge level measurement technology. Featuring FMCW and Smart Echo Supervision™, they automatically track and differentiate all echoes, including obstructions, ensuring accurate and reliable reporting of the true product level, regardless of internal tank obstructions or nozzle placement.
Ease of Use
Rosemount Non-Contacting Radar Level Transmitters are packed with smart features for ease-of-use at every touch point.
Intuitive installation and configuration
Convenient remote functionality to keep you off the tank
Perform proof-testing and schedule automatic verification in-situ for minimal process interruption
Simple trouble shooting with alerts and powerful diagnostics
Streamlined servicing with minimal spare parts needed
Versatility
Rosemount Non-Contacting Level Transmitters offer versatile antenna options:
Lens antenna: Ideal for small process fittings, open-air, or non-pressurized tanks.
Process seal antenna: Suited for aggressive media, hygienic applications, or areas with dust and condensation.
Cone antenna: Perfect for closed vessels, still pipe/chamber installations, and tall nozzles.
Parabolic antenna: Best for long measuring ranges with low reflective media.
Compliance
Rosemount 3408 and 5408 are IEC 61508 certified to SIL 2 and TÜV tested and WHG approved for overfill prevention. They offer industry-leading Dangerous Undetected (DU) numbers for efficient proof testing
Rosemount 1408H has 3A and EHEDG certifications. Rosemount 5408 also offers 3A certification
The Rosemount 1208 is Drinking Water and FDA certified.
For a complete list of product certifications, please refer to each product’s Product Data Sheet
Simplify your Measurement Tasks with Easy-to-use Radar Level Transmitters
Rosemount 5408 Level Transmitter
For liquid applications with aggressive liquid media and/or extreme conditions
For solid applications in tall silos with large solid particles, granules, pellets, or heavy powders
Two-wire FMCW and Smart Echo Supervision for superior reliability and reduced reactive maintenance tasks
Intuitive software for easy installation, commissioning, maintenance and proof-testing
Powerful onboard diagnostics for proactive health monitoring
Safety certified: IEC 61508 for SIL 2 applications to reduce risks, increase efficiency and enhance protection
Compatible with Rosemount Wireless THUM™ Adapter for a wireless solution
Rosemount 3408 Level Transmitter
For a wide range of liquid applications
For solids applications in medium silos or piles with granules, heavy and fine powders
Two-wire FMCW and Smart Echo Supervision for superior reliability and reduced reactive maintenance tasks
WirelessHART® option to automate level measurement readings in remote and hard-to-reach locations
Smart diagnostics for proactive maintenance planning
Optional Bluetooth® connectivity for easy configuration and maintenance
Remote verification: manual or automatic without process interruptions
Supports remote proof-testing with onboard functionality
NAMUR tested and IEC61508 certified for safety-critical applications
Rosemount 1208 Level and Flow Transmitter
For simple liquid applications and outdoor installations
For solid applications with powders and granules in small tanks or tight spaces
Level measurement and open channel flow calculations
Smart Echo Supervision for superior reliability and reduced reactive maintenance tasks
Compact PVDF housing with drinking water and food grade approvals
Outdoor-resistant and fully submersible encapsulated design
Different communication options available: Bluetooth®, 4-20 mA HART®, or IO-link
Wide range of mounting accessories
Easy integration into new and existing systems
Rosemount 1408 Level Transmitter
For simple and hygienic liquid applications
For solid applications with powders and granules in small tanks and tight spaces
Smart Echo Supervision for superior reliability and reduced reactive maintenance tasks
Designed for food, beverage, and life sciences industries
Meets hygienic standards: 3-A®, FDA, EC 1935/2004, EHEDG
Compact, polished stainless steel housing
Withstands CIP and SIP cleaning processes, minimizing contamination risk and ensuring product safety
Resources
Holcim Optimizes Inventory Management and Safety in Cement Plant with Radar Level Measurement
Learn How a Waste Incinerator Reduced Costs and Maintenance Work in a Fly Ash Silo
Eden Prairie Water Plant Increases Process Efficiency with Rosemount Level Instrumentation
Frequently Asked Questions
Find answers to the most frequently asked questions about non-contacting radar level sensors
Emerson’s non-contacting radar portfolio utilizes Frequency Modulated Continuous Wave (FMCW) technology. A continuous radar signal is transmitted with the frequency increasing over time, creating a “signal sweep”. This signal is reflected from the surface back to the antenna, and the level is calculated.
This technology enables greater measurement accuracy and reliability and can be applied to a broader range of applications. Changing media density, temperature variations, dust or pressure changes do not affect accuracy.
Additionally, Rosemount Non-Contacting Radar Level Transmitters feature Smart Echo Supervision signal processing algorithms. Thanks to this technology, you won’t need to worry about internal tank obstructions or nozzle placement, our non-contacting radar transmitters automatically track all echoes, including those from obstructions in the vessel, and distinguish them from the real product surface echo. This ensures the true product level is reliably and accurately reported.
Radar level technology offers significant benefits in solids applications, primarily by enabling process control and ensuring material availability. Continuous monitoring provides insights that allow for process optimization, reduced interruptions, and enhanced safety.
In solids applications, rapid level changes and low dielectric constants are common. Non-contacting radar sensors excel in these conditions and are highly recommended for level control and inventory management.
Dust generation during the filling cycle of solid materials is another challenge. Non-contacting radar transmitters effectively handle dust in the vapor space without disruption, unlike ultrasonic and laser devices, which are significantly impacted by dust.
When choosing a radar level measurement device, consider the material characteristics, silo size, and filling location. Devices mounted closer to the filling point are more susceptible to measurement interference.
Device drivers are recommended for most use cases, but Emerson offers several standalone tools for advanced configuration and diagnostics of level instruments:
- Diagnostics Tool: Focuses on troubleshooting, offline inspections, and device health, useful in maintenance scenarios needing in-depth analysis. Supports Rosemount 5408, 3408, 5300 and 3308 series radar-based devices.
Non-contacting radar level transmitters offer precise and dependable continuous level measurements without needing to touch the material surface. These radar devices remain unaffected by various process conditions, including density, viscosity, conductivity, coating, corrosiveness, foam, vapors, and fluctuating pressure and temperature. Unlike pulsed radars, Rosemount non-contacting radar transmitters boast higher sensitivity, ensuring reliable and accurate level detection despite challenging conditions.
Furthermore, these transmitters are resilient to environmental factors such as rain, sunlight, or condensation. Their lack of moving parts minimizes maintenance requirements and enhances long-term performance and reliability. With advanced on-board diagnostics, users can perform preventive maintenance, while remote proof-testing capabilities save time and improve safety.