The VY Series features highly versatile vortex flowmeters. It measures the flow rate of liquid, gas, and steam by measuring the Karman vortex street that occurs behind the shedder bar.
Support for efficient and planned plant operations
With a health diagnosis function that monitors the status of the entire instrument, the user can accurately assess the current measurement status of the instrument on the PC monitor in the control room. In addition, the status information is recorded in the instrument, making it easier to identify when maintenance is required. By performing maintenance activities such as flowmeter cleaning or shedder bar replacement based on the condition of the instrument, these features contribute to more efficient and planned plant operations.
Stable measurement by Yokogawa’s unique detection structure with a proven track record
Yokogawa's original integral detection structure provides excellent reliability and durability through: (1) a signal sensing element inside the shedder bar and (2) a simple structure without moving parts. The VY series inherits this structure, which is well-established in the YEWFLO series. In addition, by optimizing our proven SSP (*)
filtering function, measurements are more stable and stronger against vibration. The VY Series provides a measurement accuracy of ±0.75% of the reading for liquid, or ±1% of the reading for gas and steam, under a wide range of fluid conditions.
*: SSP is YOKOGAWA’s original technology for digital signal processing.
Wide range of supported applications
Succeeded the YEWFLO Series’ lineup and expanded lineup with a greater variety of specifications.
- Standardize the Dual-Sensor (Welded) General Type
- Additional standards such as SIL 2, NAMUR, etc.
- Fluid temperature range of -196 to 450°C (Including integral flowmeter)
- Flange pressure rating up to ASME Class 1500
- Additional size for the built-in temperature sensor
- Additional process connections
- Supports HART, FOUNDATION Fieldbus, and Modbus communication protocols, etc.
Enhanced input/output functions
HART communication type: Analog input (4 to 20 mA) is supported, resulting in enhanced flow rate calculation
functions such as for mass flow rate and heat flow rate. Analog output (4 to 20 mA) which is isolated, and pulse/alarm/status contact output are supported.
FOUNDATION Fieldbus communication type: The MAO (Multiple Analog Output, receive multiple signals from other devices) function block is supported, resulting in enhanced flow rate calculation functions such as for mass flow rate and heat flow rate.
Modbus communication type: Pulse/alarm/status contact output are supported.
Specification | Details |
Product Series | VY Series (Integral / Remote type) |
Measurement Principle | Karman vortex shedding + SSP (Spectral Signal Processing) |
Measured Fluids | Liquid, Gas, Saturated Steam, Superheated Steam(Not for multi-phase, adhesive or corrosive fluids) |
Nominal Size (DN) | • Wafer: DN15 ~ DN100 (½" ~ 4") • Flanged (Standard): DN15 ~ DN400 (½" ~ 16") • Reduced Bore: DN25 ~ DN200 (1" ~ 8") |
AccuracyYokogawa Electric Corporation | • Liquid: ±0.75% of reading (Re dependent) • Gas / Steam: ±1.0% of reading (velocity dependent) |
Repeatability | ±0.2% of reading |
Flow Velocity Range | 0.5 ~ 35 m/s (standard); up to 80 m/s (high velocity) |
Process TemperatureYokogawa Electric Corporation | • Standard: -40°C ~ +250°C • High Temp (HT): -40°C ~ +450°C • Cryogenic: -196°C ~ +100°C |
Process Pressure | -0.1 MPa ~ ASME Class 1500 / PN40 ANSI 150/300/600/900/1500; JIS 10K/20K/40K; PN10/16/25/40 |
Wetted Materials | • Body: CF8M (316SS), Carbon Steel (option) • Shedder Bar: Duplex Stainless Steel • Gasket: SUS316 + PTFE coating |
Power Supply | 10.5 ~ 42 VDC (loop-powered) |
Output Signals | • Analog: 4–20 mA DC (HART 5/7) • Pulse / Status: Transistor open collector • Digital: BRAIN, HART 7, FOUNDATION Fieldbus |
Display | Multi-line backlit LCD |
Ambient Temperature | -40°C ~ +85°C (detector & converter) |
Ambient Humidity | 5 ~ 100% RH (non-condensing @ 40°C) |
Enclosure Rating | IP66, NEMA 4X |
Electrical Connection | 1/2 NPT, G1/2, M20×1.5 female |
Vibration Resistance | ≤ 1 G (5 ~ 2000 Hz), IEC 60068-2-6 |
Hazardous Area Approvals | ATEX, FM, CSA, IECEx, TIIS, SAA |
Self-Diagnostic Functions | • Health diagnosis & status monitoring • Empty pipe detection • Low flow cut-off • Coil/electrode fault check • Signal noise monitoring |
Key Features | • Integrated sensor structure (no moving parts) • Enhanced anti-vibration SSP algorithm • Replaceable shedder bar (no pipe removal) • Multi-variable (temp. compensation built-in) • Remote maintenance & predictive diagnostics |
Mounting | Integral / Remote; Flange or Wafer |
Packaging: Original box
Esito (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply of specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
We can offer rosemount, Endress+Hauser, yokogawa, Siemens, ABB,Fisher,Koso, Samson, Abzil, NELES,UE etc, Brands.
MaoGu Building Weicheng District, Weifang City, Shandong Province,China
Copyright © 2025 Esito (weifang) Automation Equipment Co., Ltd. All Rights Reserved. Powered by HiCheng
