YOKOGAWA Vortex Flowmeter VY Series
Vortex Flowmeters, Ideal for Steam Flow Measurement
Vortex flowmeters are highly versatile flowmeters that can measure liquids, gases, and steam over a wide range of temperatures and pressures. The advantages offered by this type of flowmeter make them better suited than other types to measuring steam flow.
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Description
Advantages of Introducing Vortex Flowmeters for Steam
- Wide Rangeability to Accommodate Fluctuating Steam Flow Rate
- Low Pressure Loss Helps Ensure Stable Operation
- No Mechanical Moving Parts, Less Prone to Failure
The VY Series Is Recommended for the Following Users:
- Those who want to improve the efficiency and stability of device operations by using temperature and pressure compensations to measure steam flow rates with higher accuracy
- Those who want to minimize downtime by implementing predictive maintenance based on device conditions
- Those who want to reduce maintenance costs through component-based maintenance of device
Technical Information – Our Proprietary Signal Processing Technology –
Vortex flowmeters using Von Karman vortices are vibration sensors that count vortex frequencies, and as such, they are susceptible to external vibration noise. However, the VY series uses Yokogawa’s proprietary signal processing technology to ensure stable measurements at all times. Here is how it works.
Noise Reduction
As with previous models, the VY series of vortex flowmeters incorporates Yokogawa’s proprietary signal processing technology, SSP. SSP performs frequency analysis of the signal detected from the vortex shedder bar, divides it into separate bands, and automatically selects the optimal bandpass filter to transmit only the correct vortex signal with the noise removed. Even if the vortex signal contains vibration noise, only the vortex signal is output, thus ensuring stable measurement.Noise from strong piping vibration can affect the accuracy of vortex frequency detection, but the two piezoelectric elements in the VY series have reversed polarity, and therefore do not detect vibrations in the flow direction or the perpendicular direction. Noise in the direction of lift is reduced, allowing only the vortex signal to be detected. With superior vibration resistance and diagnostic functions based on our proprietary technology, the VY series provides stable measurements at all times.
Straight Pipe
Ensure at least 10D upstream and 5D downstream.
Reducer Pipe
Ensure at least 5D upstream and 5D downstream.
Expander Pipe
Ensure at least 10D upstream and 5D downstream.
Bend Pipes
(1) Single bend pipe Ensure at least 10D upstream and 5D downstream.
(2) Pipe with double bend in the same plane Ensure at least 10D upstream and 5D downstream.
(3) Pipe with double bend not in the same plane Ensure at least 20D upstream and 5D downstream.
Valve Position and Straight Pipe Length
The valve should be installed downstream of the vortex flowmeter. Ensure an upstream straight pipe length of at least 5 to 10D (see above) and a downstream straight pipe length of at least 5D. If installing the valve upstream of the vortex flowmeter cannot be avoided, ensure a straight pipe length of at least 20D upstream and 5D downstream.
