Pressure reducing and desuperheating station with a Micro Motion F100A Coriolis flowmeter and 1700 | 2700 integral transmitter

The Emerson Micro Motion 1700 and 2700 series represent a significant evolution in Coriolis flow meter design, offering a fully integrated, compact solution for a wide array of process applications. Unlike traditional two-piece systems with a separate sensor and transmitter, these models combine both elements into a single, cohesive unit. This integration streamlines installation, reduces potential leak points, and enhances overall system robustness. Designed for general-purpose and hygienic/sanitary duties, these transmitters are workhorses in industries such as chemical processing, food and beverage, pharmaceuticals, and life sciences, where space is often at a premium and reliable, accurate measurement of mass flow, density, and temperature is critical for process efficiency and product quality.

Core Technology and Design Philosophy

The fundamental principle behind the 1700 and 2700 transmitters remains the proven Coriolis effect. The process fluid flows through a single, bent or straight measuring tube (varying by model) that is set into vibration by a drive coil. As the fluid moves through the oscillating tube, it induces a Coriolis force, which causes a measurable phase shift or twisting in the tube. Integrated pickoff sensors detect this deflection, which is directly proportional to the mass flow rate. Simultaneously, the natural frequency of the vibrating tube is influenced by the density of the fluid inside, allowing for a highly accurate density measurement. The integrated transmitter's digital brain processes these raw signals in real-time using advanced algorithms to compute mass flow, density, temperature, and derived values like concentration and volume flow.

The key innovation of these series is their unibody design. By housing the transmitter electronics directly on the sensor, Emerson eliminates the need for external mounting hardware, separate enclosures, and the multi-wire cabling that connects a remote transmitter to its sensor. This not only reduces the total installed cost but also minimizes potential points of failure, such as loose connections or moisture ingress in conduit. The compact form factor makes these meters ideal for installations in cramped skids or areas with limited panel space.

Key Features and Performance Advantages

Despite their compact size, the 1700 and 2700 transmitters are packed with features that deliver substantial performance benefits:

• Exceptional Accuracy and Stability: They provide highly accurate and stable measurements of mass flow (typically ±0.10% of rate for liquids) and density (±0.0005 g/cm³), ensuring data integrity for batching, blending, and custody transfer applications.

• Advanced Diagnostics: Embedded diagnostic functions, such as the Purity Assist™ feature, help detect the presence of entrained gas in a liquid stream, alerting operators to conditions that could compromise measurement validity. This allows for proactive process management.

• Flexible Communication: The transmitters support major digital communication protocols, including the ubiquitous HART® protocol and FOUNDATION™ Fieldbus. This enables seamless integration into existing control architectures and allows for remote configuration, monitoring, and data retrieval using handheld communicators or asset management software.

• Hygienic and Sanitary Design (2700 Series): The Micro Motion 2700 transmitter is specifically designed for applications requiring strict hygienic standards. It features polished stainless steel surfaces, crevice-free design, and tri-clamp connections that meet 3-A and EHEDG guidelines, making it perfect for food, beverage, dairy, and pharmaceutical processes where cleanability and preventing bacterial harborage are paramount.

• User-Friendly Operation: Configuration is simplified through an intuitive local interface (LI) with a clear display or via the remote communication protocols. The meters are also equipped with Emersons MVD™ (Multi-Variable Digital) technology, which allows access to all measured and calculated variables through a single device address.

Applications and Impact

The integrated nature of the Micro Motion 1700 and 2700 makes them exceptionally versatile. Common applications include:

• Chemical Additive and Inhibitor Injection: Precisely dosing small amounts of costly chemicals.

• Batch and Recipe Formulation: Ensuring accurate proportions of multiple ingredients in a mixture.

• Solvent and Catalyst Loading: Charging reactors with precise amounts of materials.

• Product Blending and Transfer: In food, chemical, and refinery applications.

• CIP (Clean-in-Place) Monitoring: Verifying flow and concentration of cleaning solutions.

In summary, the Emerson Micro Motion 1700 and 2700 transmitters successfully combine the inherent accuracy of Coriolis measurement with the practical advantages of a compact, integrated design. They offer a lower total cost of ownership through simplified installation, reduced maintenance, and reliable performance, making them an ideal choice for OEMs and end-users seeking a robust and space-efficient solution for critical process measurement challenges.

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