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YOKOGAWA YF120-AAUA1A-S3S3 Yewflo Vortex Flow Meter T158646

Yf120-aaua1a-s3s3 Yokogawa E Yewflo Vortex Flow Meter T158646

( Brand: Yokogawa ), ( Manufacturer Part Number: YF120-AAUA1A-S3S3 )

Review YOKOGAWA Yewflo Vortex Flow Meter

The Yokogawa YF120-AUAU1A-S3S3 (YEWFLO) vortex flow meter, model T158646, is a high-performance, digital flow measurement instrument designed to deliver exceptional accuracy, reliability, and versatility for a wide range of industrial applications. Engineered with Yokogawa s advanced YEWFLO technology, this vortex flow meter excels in measuring the volumetric or mass flow rate of clean, single-phase liquids and gases in pipelines, making it an ideal choice for process industries such as oil and gas, chemical, power generation, water treatment, and HVAC systems. The device operates on the principle of vortex shedding, where a bluff-body sensor placed in the flow stream generates a series of alternating vortices downstream, producing a frequency proportional to the fluid velocity. This frequency is then converted into a measurable signal, providing real-time flow data with minimal pressure loss and high durability.

Featuring a robust and compact design, the YF120-AUAU1A-S3S3 incorporates a stainless steel sensor body (typically AISI 316L) with a smooth, erosion-resistant surface to ensure long-term performance in harsh environments, including high-temperature and high-pressure conditions. The sensor s internal structure is optimized to minimize turbulence and maintain consistent vortex formation, even at low flow rates, thereby enhancing measurement precision across a broad range of operating conditions. The meter s digital electronics, housed in a rugged IP65-rated enclosure, integrate a high-resolution microcontroller and advanced signal processing algorithms to deliver accurate flow readings while compensating for variations in fluid density, temperature, and pressure. This ensures reliable performance regardless of upstream or downstream disturbances, making it suitable for both new installations and retrofitting existing systems.

One of the standout features of this vortex flow meter is its flexibility in configuration and connectivity. The YF120 model supports a variety of communication protocols, including HART, Profibus PA, Foundation Fieldbus, and Modbus RTU, allowing seamless integration with Yokogawa s EXA or STARDOM PLCs, as well as third-party SCADA systems. The AUAU1A designation indicates a specific sensor size (120 mm nominal diameter) paired with an analog output (4 20 mA) and HART communication, while the S3S3 designation signifies a particular sensor body material and mounting style, ensuring compatibility with a range of pipeline configurations. Additionally, the meter s wide turndown ratio (typically 20:1 or higher) enables it to handle both high and low flow rates efficiently, reducing the need for multiple sensors in varying applications. The YEWFLO technology also eliminates the need for moving parts in the sensor itself, minimizing wear and tear and reducing maintenance requirements over the meter s operational lifespan.

For enhanced functionality, the YF120-AUAU1A-S3S3 can be equipped with optional features such as a built-in totalizer for cumulative flow measurement, a local display for real-time monitoring, or remote calibration capabilities via Yokogawa s Field Communicator software. The meter s calibration is traceable to international standards, ensuring compliance with industry regulations and providing users with confidence in the data integrity. Furthermore, Yokogawa s reputation for quality and innovation is reflected in the meter s robust calibration stability, with minimal drift over time, even in demanding environments. Whether deployed in a refinery, power plant, or municipal water treatment facility, this vortex flow meter delivers a balance of precision, durability, and ease of use, making it a trusted solution for flow measurement challenges in modern industrial processes.

### **Pros and Cons of buying a Yokogawa YF120-AUAUA1A-S3S3 (YEWFLO Vortex Flow Meter, T158646)**

#### **Pros**

1. **High Accuracy and Reliability** Yokogawa is a well-established manufacturer known for precision instrumentation. The YF120 series is designed for stable vortex flow measurement, making it suitable for applications requiring consistent performance in liquids and gases.

2. **Wide Application Range** The model supports a broad range of flow rates and mediums, including water, steam, oil, and other clean fluids. It is also suitable for industrial processes like HVAC, chemical, and water treatment systems.

3. **Durable Construction** The flow meter is built with robust materials, including stainless steel and corrosion-resistant coatings, ensuring longevity in harsh environments.

4. **Digital Output and Communication** It features digital signal processing and supports communication protocols such as HART and Modbus, allowing easy integration with PLCs, SCADA systems, and other industrial control networks.

5. **Low Maintenance Requirements** Vortex meters have no moving parts inside the sensor, reducing wear and tear compared to mechanical flow meters. This leads to lower maintenance costs over time.

6. **Wide Temperature and Pressure Ratings** The unit can handle a broad range of operating conditions, including high temperatures and pressures, making it versatile for various industrial applications.

7. **Energy Efficiency** Vortex meters are known for their low-pressure drop, which helps maintain system efficiency and reduces energy consumption.

8. **Certifications and Compliance** Yokogawa products often meet international standards such as ATEX, IEC, and others, ensuring compliance with safety and regulatory requirements in different regions.

9. **Long-Term Stability** The vortex shedding principle provides consistent measurement over extended periods, minimizing drift and calibration issues.

10. **Compatibility with Yokogawa Systems** If you already use Yokogawa instruments or software, this flow meter will integrate seamlessly with existing infrastructure.

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#### **Cons**

1. **Higher Initial Cost** Compared to some basic mechanical or ultrasonic flow meters, the YF120 is a premium product, which may require a significant upfront investment.

2. **Limited to Clean Fluids** Vortex meters are not suitable for measuring slurries, liquids with suspended solids, or highly viscous fluids, as these can clog or damage the sensor.

3. **Sensitivity to Fluid Properties** The meter s performance depends on the fluid s density, viscosity, and temperature. Significant deviations from expected conditions may affect accuracy.

4. **Potential for Signal Noise** In some applications, vortex shedding can produce noise in the signal, requiring proper filtering or calibration to ensure reliable readings.

5. **Installation Requirements** Proper installation, including straight pipe runs upstream and downstream, is critical for accurate measurements. Improper installation can lead to inaccurate readings or damage.

6. **Limited Turndown Ratio** While the YF120 offers a good turndown ratio, it may not be as flexible as some other types of flow meters (e.g., turbine meters) in applications requiring extreme flow rate variations.

7. **Calibration Needs** Although vortex meters are generally stable, periodic calibration may still be required to maintain accuracy, especially in critical applications.

8. **Limited Availability of Spare Parts** As a specialized industrial instrument, finding replacement parts or service technicians may be challenging outside major industrial hubs.

9. **Not Ideal for Low-Flow Applications** The meter may struggle with very low flow rates, where other technologies (e.g., Coriolis meters) might perform better.

10. **Learning Curve for Setup** Configuring communication protocols (e.g., HART, Modbus) and ensuring proper integration with control systems may require technical expertise.

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### **Conclusion**

The **Yokogawa YF120-AUAUA1A-S3S3 (YEWFLO Vortex Flow Meter)** is a high-quality, reliable, and durable flow measurement solution ideal for industrial applications where accuracy, stability, and low maintenance are priorities. Its digital communication capabilities and wide operational range make it a strong choice for water treatment, HVAC, chemical processing, and other clean-fluid applications.

However, its higher cost, sensitivity to fluid conditions, and specific installation requirements may pose challenges for budget-conscious or less technically advanced users. It is best suited for environments where long-term performance and integration with advanced control systems are essential.

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### **Recommendation**

**Buy the Yokogawa YF120 if:**

- You require a **high-accuracy, low-maintenance flow meter** for clean liquids or gases in industrial settings.

- Your application involves **steady-state flow conditions** with minimal turbulence or suspended particles.

- You need **digital communication (HART/Modbus)** for integration with PLCs or SCADA systems.

- You prioritize **long-term reliability and durability** over short-term cost savings.

- Your system can accommodate the **installation requirements** (straight pipe runs, proper sizing).

**Avoid the Yokogawa YF120 if:**

- Your budget is **strictly limited**, and you can opt for a lower-cost alternative (e.g., ultrasonic or turbine meters).

- You are measuring **slurries, highly viscous fluids, or fluids with suspended solids**.

- Your application involves **extreme flow rate variations** that exceed the meter s turndown capabilities.

- You lack the **technical expertise** to configure and maintain the meter or integrate it with control systems.

- You require **portable or field-installable** solutions where bulkier or more flexible meters may be preferable.

**Alternative Considerations:**

- For **cost-sensitive applications**, consider **ultrasonic flow meters** (e.g., Siemens or Badger meters) if they meet your accuracy needs.

- For **high-viscosity or slurry applications**, **Coriolis meters** (e.g., Emerson or Siemens) may be more suitable despite higher costs.

- For **low-flow or variable-flow conditions**, a **turbine or electromagnetic (magmeter) flow meter** might be more appropriate.

In summary, the YF120 is an excellent choice for **industrial-grade flow measurement** where performance and integration matter most, but it is not the best fit for all applications. Carefully assess your specific requirements before purchasing.

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