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01Temperature MeasurementTemperature measurement uses temperature sensors, thermocouples, RTDs and other instruments to accurately detect and monitor process temperatures. 02Level MeasurementLevel measurement uses ultrasonic level meters, radar level meters, and other instruments to detect and monitor the level or height of materials in tanks, vessels, and process equipment. 03Pressure MeasurementPressure measurement uses pressure transmitters, differential pressure transmitters, and other instruments to detect and monitor pressure and pressure changes in pipelines, tanks, and process equipment. 04Flow measurementFlow measurement uses electromagnetic, ultrasonic, vortex, and mass flow meters to detect and monitor the flow of liquids, gases, or steam in pipelines. 05DCSYokogawa DCS cards are core modules of a distributed control system, used to acquire field signals such as temperature, pressure, and flow, while providing control, output, and communication functions. 06Water Quality AnalysisWater quality analysis uses water quality analyzers and online monitoring instruments to detect and monitor key parameters such as pH, dissolved oxygen, turbidity, conductivity, and residual chlorine in water. 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Product Overview

Yokogawa VY Series Vortex Flowmeter

VY

The Yokogawa VY Series Vortex Flowmeter is engineered for accurate liquid, gas, and steam flow measurement across industrial applications. It features advanced digital communication compatibility and a robust, obstructionless design tailored for continuous, reliable operation.

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industrial vortex flowmeter for liquid gas and steam measurement

Product Overview

The Yokogawa VY Series Vortex Flowmeter stands at the forefront of industrial process measurement, delivering exceptional accuracy and long-term stability for monitoring diverse fluid types. Designed to meet the rigorous demands of modern industrial automation, this digital gas flowmeter and liquid monitoring device integrates cutting-edge frequency output technology with a rugged mechanical structure. Whether deployed in chemical processing plants, power generation, or general utility networks, this industrial vortex meter ensures precise data acquisition and seamless system integration.

Core Technology & Measurement Principle

Operating on the principle of Karman vortex shedding, the Yokogawa VY vortex flowmeter measures the frequency of vortices generated behind a precision-engineered shedder bar. With no internal moving parts, this obstructionless design completely eliminates pressure drops and significantly reduces maintenance requirements. The device features an intuitive local indicator equipped with high-visibility displays, alarm icons, and interactive setting switches, enabling engineers to monitor process variables and configure parameters safely.

Communication & System Flexibility

Equipped with versatile communication protocols—including HART protocol, FOUNDATION Fieldbus, and Modbus communication types—the VY series flow meter offers flexible integration into existing control room architectures. It supports active 4 to 20 mA analog outputs, pulse outputs, status alarms, and auxiliary analog inputs, ensuring comprehensive feedback for complex control loops. Furthermore, data backup and restoration are fully supported via pre-amplifier data storage, enhancing operational efficiency during maintenance.

Rugged Build & Safety Standards

Built to withstand harsh industrial environments, the flowmeter complies with strict international EMC standards and offers waterproof construction options (IP66/IP67 / Type 4X). The meter incorporates rigorous grounding options, lightning protection capabilities (option code /A), and robust temperature ranges, ensuring maximum structural integrity and safety in demanding outdoor or indoor installations.

Application Fields

  • Chemical & Petrochemical Processing: Ensures stable, high-precision flow monitoring for corrosive and high-temperature chemical media within industrial piping networks.

  • Power & Steam Generation: Accurately measures superheated and saturated steam flows to optimize thermal energy efficiency and boiler performance.

  • Water & Wastewater Management: Delivers reliable continuous flow measurement for municipal and industrial water distribution and effluent treatment.

  • Industrial Manufacturing & Process Automation: Integrates seamlessly with DCS and PLC architectures via HART, Fieldbus, or Modbus for real-time liquid, gas, and steam tracking.

Technical Specifications

  • Applicable Fluids: Liquid, Gas, and Steam

  • Size Range: 15 mm to 400 mm (0.5 in. to 16 in.)

  • Communication Protocols: HART (HART 7), FOUNDATION Fieldbus, and Modbus (RS-485)

  • Power Supply Voltage:

    • HART Type: 10.5 to 42 V DC (10.5 to 30 V DC with lightning protector)

    • Fieldbus / Modbus Type: 9 to 32 V DC / 9 to 30 V DC

  • Output Signals: 4 to 20 mA DC analog output, pulse output (80 mA DC max), and status/alarm contacts

  • Enclosure Protection: IP66 / IP67 (IEC 60529) and NEMA Type 4X

  • Ambient Temperature Range: -29°C to 85°C (Standard type); options available down to -50°C (/LAT)

FAQ

  • Q: Can the VY Series flowmeter measure multi-phase flows such as gas-liquid mixtures?

    • A: No. While the flowmeter handles liquid, gas, and steam independently within the same structure, accurate measurement of mixed multi-phase flows (such as bubble or mist flows) is not possible.

  • Q: How is zero adjustment performed if the meter outputs a signal during zero flow?

    • A: Although zero drift is minimal due to the frequency output sensor, you can perform manual low-cut adjustments or execute “Tuning at zero” (Zero Tuning) via the configuration tool or indicator when the fluid flow is completely stopped.

  • Q: What should be checked if the indication drops to zero while fluid is flowing?

    • A: Check for potential coating or scaling on the vortex shedder bar or inner tube, verify that parameter configurations match operating conditions, and ensure the low-cut or TLA values are correctly set.

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