Reliable and Easy-to-Use Level Sensors for Diverse Industries
Discover Emerson’s Rosemount Level Measurement Portfolio, featuring a wide selection of level transmitters, detectors, switches, software solutions and control units tailored for both liquid and solid applications. Our instruments are designed to enhance operational efficiency, reduce costs, and maintain safety across various industries—from straightforward to the most challenging applications.
Ensure peace of mind and elevate process efficiency with proven level measurement instruments.
Products
Level Transmitters
Non-Contact Radar Sensors for Solids and Liquids
Non-contacting radar level transmitters utilize free space microwave technology to measure the continuous level of liquids or solids in tanks, vessels, and open-air applications across a wide range of industries. Our non-contacting radar portfolio delivers accurate and reliable performance, even in demanding process conditions. With no contact with the measured media, these easy-to-use transmitters ensure safe and accurate level measurement, giving you confidence that your process is running smoothly and efficiently.
Guided Wave Radar Sensors for Solids, Liquids and Interface
Guided Wave Radar Level Transmitters utilize microwave technology that propagates microwave pulses along a probe to measure continuous level and interface level of liquids, solids, and slurries. Emerson’s market-leading portfolio offers accurate, reliable, safe and cost-effective level measurement, even in the most challenging process conditions. Powerful onboard diagnostics give insight into device health and signal quality, giving you peace of mind your process is under control.
Differential Pressure Level Sensors for Liquids, Vapors and Gases
Differential Pressure Level Measurement determines level by measuring pressure and specific gravity, providing a proven and versatile solution for a wide range of applications and industries. Emerson’s DP level transmitters offer reliable and accurate performance in both standard and challenging environments. Available in configurations from direct or remote mount seals to tuned, balanced, and electronic systems, our portfolio also includes wireless options for flexible, cost-effective installation, helping you maintain control and visibility across your process.
Magnetic Level Indicator for Non-Invasive Level Measurement
Emerson’s Magtech Magnetic Level Transmitters provide reliable and precise level measurement using proven magnetostrictive technology. These transmitters can be installed as direct insertion devices for in-pipe applications or externally mounted to magnetic level indicators for non-invasive measurement. Designed for accuracy, durability, and safety, they deliver dependable level data to your control system, ensuring consistent performance and peace of mind in your operation.
Wireless Level Measurement
Automate Level Measurements Remotely with Wireless Level Transmitters
Emerson’s native wireless solutions allow users to automate their operations even in remote or hard-to-reach locations. Obstacles such as physical obstructions, high engineering costs, or integrating new technologies are no longer barriers to reliable level measurement with WirelessHART communication. We offer native wireless solutions for our non-contacting and guided wave radar technology as well as vibrating forks, ensuring a tailored fit for a wide range of applications and industries.
Level Switches
Point Level Switch for Liquids
Liquid level switches and probes measure point level within a vessel. Emerson’s portfolio is based on vibrating fork technology and offers a safe, reliable and cost-effective solution in most liquid applications such as high-low level monitoring, pump control, critical alarms and overfill prevention. Switches may be installed for primary monitoring or control, or alongside other level technology providing redundancy and reducing risk.
Solids Level Switches
Solids Level Switches are a reliable and cost-effective point level solution to detect the presence or absence of solid media in a variety of applications, such as in the food and beverage industry, chemical processing, and wastewater treatment. Emerson’s portfolio includes vibrating fork and rod technology, paddle switch and capacitance technology, providing easy-to-install and accurate level measurement and control in different media types and process conditions.
Magnetic Level Technology
Magnetic Level Instruments
Magnetic level technology provides robust, low maintenance measurement in oil and gas, petrochemical and power applications. Rosemount™ 9930 Magnetic Level Indicators may be used as a replacement for sight glasses and to add redundancy when used as a complete level solution alongside the Rosemount™ 5300 Guided Wave Radar Level Transmitter and Rosemount™ 9935 Level Bypass Chamber. Emerson’s portfolio also includes Magnetostrictive Transmitters and Magnetic Level Switches, providing flexible level detection in many installation types.
Communication and Control Units for Level Transmitters
Level Measurement Systems
Tank Gauging
Secure efficient, safe, and scalable tank operations with the Rosemount™ Tank Gauging system. Benefit from real-time inventory management, certified custody transfer accuracy, and compliance with overfill prevention standards. Gain precise radar level, pressure, and temperature measurements for inventory insights. Optimize terminal operations with cost-effective upgrades and scalable automation.
Tank Monitoring
Automate your tank inventory with a Tank Monitoring System. Monitor level, temperature, and volume for inventory control and stock optimization. Improve operational efficiency, safety, and flexibility. The system connects tank data from a wide range of measurement instruments to an inventory management platform, providing scalability and rich inventory visualization in the field and control room.
Product Applications
Chemical
Solids Level Measurement in Wet Sand Bunker
Level Measurement for Chemical Storage Process Vessels
Level Measurement Solutions for Blending and Mixing Tanks
Level Measurement Solutions for Reactors & Mixing Tanks
Level Measurement of Finished Polyvinyl Chloride (PVC) Resins in PVC Production
Level Measurement of Stored Polyvinyl Chloride (PVC) Powder in PVC Production Facilities
Level Measurement of Stored Salts in Polymer Production
Solids Level Detection in Holding Hopper During Carbon Reclamation Process
Solids Level Measurement for Stored Polymers in Plastic Compounding Production
Level Measurement in Polypropylene/ Polyethylene Plastics Production
Level and Temperature measurement for Inventory control in Chemical Silo and Storage Tanks
Level Measurement in Adsorbents Storage Tanks
Level Measurement of Aqueous Ammonia
Level Measurement for Anhydrous Ammonia Tanks
Differential Pressure (DP) Level measurement for liquid hydrogen storage tanks
Level Measurement for Fertilizer Filled Dosing Tanks
Inventory Control and Level Measurement in Paint Production
Level Monitoring in Green Hydrogen & Oxygen Separators
Resources
Holcim Optimizes Inventory Management and Personnel Safety in Cement Plant with Radar Level Measurement
Sherwin-Williams Reduces Costs and Enhances Safety With Wireless Level Instruments
Power Plant Achieves Reliable Boiler Drum Level Control with Guided Wave Radar Technology
Maintenance-free Radar Level Transmitter Reduces Operational Costs at Waste Incinerator Plant
Eden Prairie Water Plant Increases Process Efficiency with a Complete Level and Flow Measurement Solution
Solids Applications Case Studies with Point Level Switches
Level Measurement Engineering Guide
Bulk Solids Level Measurement Application Guide
How to Determine Which Level Measurement Technology is Best for Your Specific Application?
Rosemount Level Measurement Instrumentation
Level Instrumentation for Solids Application
Frequently Asked Questions
There are several level measurement technologies available in the market, and sometimes, it can be hard to know which one is more suitable for a specific application or industry. Below, a team of Emerson experts answers some of their most frequently asked questions regarding level measurement technologies and how these technologies can help users.
Choosing a level measurement solution from Emerson’s wide portfolio of level technologies involves evaluating several critical factors to ensure the best fit for a specific application; that’s where decades of experience and a customer-centric approach help.
However, these are the 10 key considerations that one needs to have when choosing the most suitable technology for their application:
- Application type (solids, liquids, slurry)
- Measurement range
- Environmental conditions and material properties
- Installation constraints
- Process dynamics and signal interference
- Power supply and communication
- Initial and operational costs
- Vendor support
- Safety and compliance
- Redundancy and diagnostics
Emerson offers flexible off-the-shelf and engineered-to order level system solutions for all market segments, both onshore and offshore, adapted for each specific application and customer need.
A system typically includes:
Field equipment on tanks (i.e., level, temperature, and pressure sensors)
Communication and calculation units
Operator software that provides a complete inventory management and cargo monitoring solution.
These solutions help customers in many ways, providing accurate product inventory according to industry standards, custody transfer, and increased operational and environmental safety with overfill prevention and leak detection.
Emerson’s Rosemount level measurement technology portfolio also includes tailored solutions for tank monitoring and cloud connectivity for applications where customers need insight and transparency into their inventory of remote and mobile assets.
Guided Wave Radar technology offers reliable and precise level measurement, especially in complex applications involving multiple liquid layers or challenging process conditions. Its design and operating principles provide several distinct benefits:
- No Moving Parts: Reduces mechanical wear and minimizes maintenance requirements.
- Direct Contact Measurement: The probe contacts the liquid, improving signal strength and enabling accurate detection of liquid interfaces.
- Interface Measurement Capability: Ideal for applications with multiple layers (e.g., oil and water), where it can measure both the top and bottom levels—unlike non-contact radar which only detects the uppermost surface.
- High Accuracy: Maintains precise readings even in difficult conditions such as turbulence, foam, or vapor.
- Process Resilience: Unaffected by changes in temperature, pressure, or media density, ensuring consistent performance.
- Compact Installation: Suitable for narrow tanks or vessels with internal obstructions.
Non-contacting radar is the technology of choice across diverse applications, both in liquid and solid media, from small tanks and open-air installations to large industrial vessels.
This technology is ideal for industries like:
- Oil and gas
- Refining
- Petrochemical
- Chemical
- Life sciences
- Water and wastewater
- Metals and Mining
- Pulp and Paper
- Food and Beverage
Non-contacting radar is also suitable for applications with challenging conditions, including:
- Fluctuating process environments
- Turbulence
- High temperature and pressure
- Tanks with internal obstructions
The technology ensures that no component contacts the liquid or fluid being measured, which reduces wear and tear. Non-contacting radar is superior to legacy technologies such as ultrasonic level devices, providing more accuracy and reliability.
In industries such as food and beverage and life sciences, top-mounted non-contacting radar level measurement is preferred to minimize any contamination risks.
Learn More about Non-Contacting Radar Technology
There is a time-tested formula for differential pressure (DP) level measurement. To determine DP, one must calculate the hydrostatic head pressure at the bottom of the vessel and the specific gravity of the fluid. Traditional DP technologies, such as wet and dry leg systems, which utilize impulse piping, are commonly used to measure tank level. However, advanced solutions have been developed to improve performance and address the application challenges traditional configurations face. These innovations include the Rosemount 3051S Electronic Remote Sensor (ERS) System and Tuned-System Assemblies. Tuned-System Assemblies deliver reduced measurement error, increased response time, and decreased installation costs. The asymmetrical design of the Tuned-System Assembly minimizes fill-fluid volume on the high side in order to counteract the temperature-induced density effects experienced by vertical installations. Rosemount ERS Systems replace impulse piping and long lengths of capillary with two pressure transmitters linked together electronically. This digital architecture improves time response and measurement accuracy.