HomeElectronics NewsFlow Meter Liner Made for Water and Wastewater Use

Flow Meter Liner Made for Water and Wastewater Use

A PFAS-free liner for magnetic flow meters helps reduce wear, handle abrasive materials, lower costs, simplify inventory management, and extend flow meter life.

Rosemount Magnetic Flow Meter with PEX liner.
Rosemount Magnetic Flow Meter with PEX liner. 

Emerson has introduced a new PEX liner option for its Rosemount 8750W Magnetic Flow Meter, Rosemount 8705 Flanged Magnetic Flow Meter, and Rosemount MS Magnetic Flow Meter sensors. The new liner is designed for water, wastewater, slurry, and other abrasive applications, providing a PFAS-free alternative that can help extend flow meter life, reduce costs, and simplify inventory management.

The PEX liner is available for line sizes up to 8 inches, with larger sizes currently under development. It is designed to improve performance in applications where chemical exposure and abrasive materials can shorten the lifespan of traditional liner materials.

Many existing liner options can wear down when exposed to chemicals or abrasive slurries. As they degrade, they may require more maintenance and replacement. Some liner materials can also create inventory challenges because different applications often require different liner types. In addition, certain liners can be costly to purchase and maintain, particularly when installation delays or reinstallation issues lead to liner flaring.

To address these challenges, Emerson has added the PEX liner option to its Rosemount magnetic flow meter portfolio. The liner is formulated without per- and polyfluoroalkyl substances (PFAS), helping users respond to growing regulatory and environmental concerns related to these materials.

The crosslinked molecular structure of the PEX liner provides resistance to abrasion, making it suitable for wastewater systems, slurry handling, and other processes involving suspended solids. By reducing liner wear, the material can help extend the service life of flow meters operating in demanding conditions.

The use of a single PFAS-free liner material can also simplify material selection and stocking requirements compared with fluoropolymer-based alternatives that may vary depending on the application. Along with improved durability, the PEX liner is typically less expensive than many alternative liner materials, helping reduce overall ownership costs.

With the addition of the new PEX liner, users can address durability, compliance, and inventory concerns while continuing to use the same magnetic flow measurement technology.

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Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a Senior Technology Journalist at Electronics For You, specialising in embedded systems, development boards, and IoT cloud solutions. With a Master’s degree in Signal Processing, she combines strong technical knowledge with hands-on industry experience to deliver clear, insightful, and application-focused content. Nidhi began her career in engineering roles, working as a Product Engineer at Makerdemy, where she gained practical exposure to IoT systems, development platforms, and real-world implementation challenges. She has also worked as an IoT intern and robotics developer, building a solid foundation in hardware-software integration and emerging technologies. Before transitioning fully into technology journalism, she spent several years in academia as an Assistant Professor and Lecturer, teaching electronics and related subjects. This background reflects in her writing, which is structured, easy to understand, and highly educational for both students and professionals. At Electronics For You, Nidhi covers a wide range of topics including embedded development, cloud-connected devices, and next-generation electronics platforms. Her work focuses on simplifying complex technologies while maintaining technical accuracy, helping engineers, developers, and learners stay updated in a rapidly evolving ecosystem.

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