Vortex Flowmeters

History of YOKOGAWA's Vortex Flowmeter

Yokogawa launched the world's first vortex flowmeter in 1969.
For over 50 years, the long-term stability and high accuracy characterized by Yokogawa Vortex flowmeters has continued to improve customer productivity. Sales of over 500,000 units is a testament to the reliability of the YEWFLO series. In 2022, we launched the latest series of YEWFLO, the Vortex flowmeter VY series.

The history of YOKOGAWA's vortex flowmeters dates back to 1969 when we launched insertion-type flowmeters for flare stacks.
In 1979, we launched the general-purpose vortex flowmeter and in 1981 we launched YEWFLO*C with the base sensing structure. In 1992, we introduced YEWFLO*E, which excelled in noise resistance. The structure of the YEWFLO*E has evolved with the latest VY series.
In 2000, we launched the digitalYEWFLO series, which have our proprietary digital signal processing technology SSP. This digitalYEWFLO series pioneered a new stage for vortex flowmeters with automatic noise removal functions and diagnostic functions.
Furthermore, to meet various needs and support applications of our customers, the YEWFLO series has continuously evolved. In 2002, we released the Built-in Temperature Sensor type that can calculate saturated steam flow with a single unit. In 2006, we introduced the Reduced Bore type for smart piping. Moreover, in 2012, we launched large-diameter models (up to 400 mm). These specifications are, of course, also available in the vortex flowmeter VY series.
In 2022, we launched the latest VY series, continuing the history of YOKOGAWA's vortex flowmeters.

Vortex Flowmeters VY Series Product Introduction

VY Series is Yokogawa's line of vortex flowmeters with digital technology and a unique structure inherited from YEWFLO series.
Digital technology provides overall diagnostics and condition based maintenance. In addition, the unique structure provides robustness and stable measurement.
VY Series offers a wide product range with variety of standards to meet diversifying customer requirements.
For more detail information, please check the page of Vortex flowmeter VY Series.

		Vortex Flowmeters VY Series
		General Type	Built-in Temperature Sensor Type	High Temperature / Cryogenic Type	Reduced Bore Type ( 1 / 2 size reduction)	High Pressure Type	Dual-Sensor Type
Measurable Fluid		Liquid, Gas, Saturated Steam, Superheated Steam (Avoid multiphase flow and sticky or corrosive fluids)
Applicable Fluid Temperature Range		-196 to 450 °C depends on the shedder bar type and material
Connection Size	Wafer	15 to 100 mm
	Flange	General Type : 15 to 400 mm Reduced Bore Type ( 1 size reduction) : 25 to 200 mm Reduced Bore Type ( 2 size reduction) : 40 to 200 mm High Pressure Reduced Bore Type ( 1 size reduction) : 25 to 150 mm Dual-Sensor Type : 15 to 200 mm
Accuracy	liquid	± 0.75 % of reading
	Gas and Steam	± 1 % of reading

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