Introduction to the Rosemount 9195 Wedge Flow Meter

Global automation technology leader Emerson has introduced the Rosemount 9195 Wedge Flow Meter, which represents a significant advancement in fluid measurement technology. This fully integrated solution comprises a wedge primary-sensor element, supporting components, and a selectable Rosemount pressure transmitter. The innovative design of the meter makes it exceptionally suited for measuring process fluids that exhibit a wide variety of demanding characteristics. This is especially relevant in heavy industry sectors such as metals and mining, oil and gas, renewable fuels, chemicals and petrochemicals, as well as pulp and paper.

Challenges in Accurate Volumetric Flow Measurement

Measuring volumetric flow accurately and reliably presents numerous challenges, particularly in applications involving highly viscous liquids, abrasive substances, or conditions that may lead to plugging. Situations involving high temperatures or low ambient temperatures can further complicate the measurement process. Typically, heat tracing is required in these scenarios to manage the temperature of the process media, which not only demands electrical power but also introduces a maintenance-intensive single point of failure.

Innovative Solutions from the Rosemount 9195

The Rosemount 9195 Wedge Flow Meter effectively addresses these common challenges with its intelligently engineered design. The wedge element features no small passages that could become clogged due to entrained particles, and its abrasion-resistant characteristics stem from the shallow approach angle of the process liquid combined with the absence of critical sharp edges. This design enables the meter to accurately measure highly viscous liquids, even at low Reynolds numbers, owing to its linear response.

The sensor operates within a temperature range of -40 to 1,000°F, and the meter can be paired with Emerson’s Rosemount 3051S Thermal Range Expander. This compatibility allows for the measurement of hot or viscous liquids without the additional requirement for heat tracing, thereby enhancing efficiency and reducing maintenance needs.

Expert Insights

David Wright, the global product manager for Emerson’s measurement solutions business, emphasizes the significance of the Rosemount 9195, stating, “The Rosemount 9195 offers a fully assembled design for accurate measurement of liquids that wear or plug other meters. This new design solves a range of difficult customer problems by integrating innovative features into a trusted technology.”

Digital Connectivity and Data Transmission

The Rosemount 9195 Wedge Flow Meter supports two-way digital connections from the selected pressure transmitter to a host system, such as a distributed control system or an asset management system. Communication protocols include 4-20 mA HART, WirelessHART, FOUNDATION Fieldbus, Modbus, and BSAP/MVS. Depending on the chosen transmitter, a broad spectrum of process variables can be transmitted to host systems, facilitating process control, monitoring, diagnostics, and a variety of other applications.

Application Flexibility

The Rosemount 9195 provides application flexibility through three distinct sensor/transmitter connection styles:

• Compact: This option reduces pipe standoff, addressing concerns related to plugging and cleaning. The saddle-style, remote-seal connection reduces the weight of the meter by 50%.
• Flanged: Featuring a 2-inch NPS/DN50 connection, this traditional style is ideal for applications requiring flushing rings and valve assemblies.
• Threaded: This option incorporates a 1/2-inch NPT connection with tubing, making it suitable for applications where erosion or wear is a more significant concern than plugging.

Customized Solutions for Diverse Needs

To streamline the ordering process and ensure the appropriate remote-seal system is selected, Emerson offers five optional application packages for the sensor element. These packages cater to various needs, including standard, abrasive, ultra-high process temperature, cold environment, and remote mount applications.

Specifications and Compliance

The available line sizes for the sensor range from 2-inch to 8-inch (50 to 200 mm). All wetted materials are constructed from 316L stainless steel, ensuring durability and resistance to corrosion. Additionally, the Rosemount 9195 complies with ASME B31.3 and CRN safety standards, and Emerson can accommodate additional materials and sizes upon request.

Conclusion

The Rosemount 9195 Wedge Flow Meter by Emerson represents a robust solution to the challenges of measuring demanding process fluids in various heavy industrial applications. By integrating innovative design features with proven technology, this meter not only enhances measurement accuracy but also reduces maintenance needs, thereby providing a reliable choice for industries requiring precision and efficiency.

For more information on the Rosemount 9195 Wedge Flow Meter, visit www.Emerson.com/Rosemount-Wedge.