Advantages and Disadvantages of Vortex Flow Meters

Disadvantages of Vortex Flow Meters

1.While the volumetric flow rate of a vortex flow meter in operation is not affected by thermal parameters of the measured fluid (such as temperature, pressure, and density), the final measurement result for liquids or steam should be mass flow rate, and for gases, it should be standard volumetric flow rate. Both mass flow rate and standard volumetric flow rate require conversion via fluid density, so changes in fluid density caused by variations in fluid working conditions must be considered.

2.Key factors contributing to flow measurement errors include:

• • Measurement errors due to uneven pipe flow;
  • Inability to accurately determine medium density when fluid working conditions change;
  • Measuring wet steam as dry saturated steam.
  • If these errors are not restricted or eliminated, the total measurement error of the vortex flow meter will be significant.

3.Poor anti-vibration performance. External vibrations can cause measurement errors (or even malfunctions) in vortex flow meters. High-speed impact of fluid in the channel may induce additional vibration in the bluff body of the vortex generator, reducing measurement accuracy—this effect is more pronounced for large-diameter meters.

4.Low adaptability to dirty media. The generator of a vortex flow meter is highly susceptible to fouling or entanglement by contaminants, which alters its geometric dimensions and severely impairs measurement accuracy.

5.Strict straight pipe section requirements. Experts note that vortex flow meters require a straight pipe section of 40D (upstream) and 20D (downstream) to meet measurement standards.

6.Limited temperature performance. Vortex flow meters can typically only measure fluid flow for media with temperatures below 300°C.

Above are the disadvantages of vortex flow meters we’ve introduced. Like all instruments and meters, they have unique advantages and unavoidable drawbacks. The key is to select the appropriate product based on your specific needs.