The main advantage:
(1) The vortex flowmeter has a simple structure and is easy to install and maintain.
(2) There are many types of fluids, such as liquids, gases, steam, and some miscible fluids.
(3) Compared with differential pressure and float flowmeters, the accuracy is relatively high, generally up to ±1%R.
(4) The width of the range is 10:1 or 20:1.
(5) The pressure loss is small, about 1/2 to 1/4 of the orifice flowmeter.
(6) The output pulse signal proportional to the flow rate is suitable for total measurement without zero point migration.
(7) Within a certain range of Reynolds number, the output frequency signal is not affected by fluid properties (density, viscosity) and components. The meter coefficient is related to the shape and size of the vortex generating body and the pipeline, and can be verified in a typical medium. It applies to all kinds of media.
(8) The corresponding vortex detection technology can be selected for different objects.
limitation:
(1) Vortex flowmeters are not suitable for low Reynolds number (ReD≤2*104) measurements and are limited in applications with high viscosity, low flow rates, and small bore diameters.
(2) The place where the pipeline has vibration should use the instrument with anti-vibration detection method.
(3) The stability of the vortex separation is affected by the distortion of the flow velocity distribution and the influence of the swirling flow, and a sufficiently long straight pipe section should be configured according to different upstream blockers on the upstream side. Generally, reference can be made to the length requirement of the straight pipe section of the throttling differential pressure flowmeter. installation.
(4) Compared with turbine flowmeters, the meter coefficient is low, the resolution is low, and the larger the aperture is, the lower is the general application of medium and small apertures (DN25 to DN300).
(5) The instrument is still lack of test data in pulsating flow and mixed flow.
(1) The vortex flowmeter has a simple structure and is easy to install and maintain.
(2) There are many types of fluids, such as liquids, gases, steam, and some miscible fluids.
(3) Compared with differential pressure and float flowmeters, the accuracy is relatively high, generally up to ±1%R.
(4) The width of the range is 10:1 or 20:1.
(5) The pressure loss is small, about 1/2 to 1/4 of the orifice flowmeter.
(6) The output pulse signal proportional to the flow rate is suitable for total measurement without zero point migration.
(7) Within a certain range of Reynolds number, the output frequency signal is not affected by fluid properties (density, viscosity) and components. The meter coefficient is related to the shape and size of the vortex generating body and the pipeline, and can be verified in a typical medium. It applies to all kinds of media.
(8) The corresponding vortex detection technology can be selected for different objects.
limitation:
(1) Vortex flowmeters are not suitable for low Reynolds number (ReD≤2*104) measurements and are limited in applications with high viscosity, low flow rates, and small bore diameters.
(2) The place where the pipeline has vibration should use the instrument with anti-vibration detection method.
(3) The stability of the vortex separation is affected by the distortion of the flow velocity distribution and the influence of the swirling flow, and a sufficiently long straight pipe section should be configured according to different upstream blockers on the upstream side. Generally, reference can be made to the length requirement of the straight pipe section of the throttling differential pressure flowmeter. installation.
(4) Compared with turbine flowmeters, the meter coefficient is low, the resolution is low, and the larger the aperture is, the lower is the general application of medium and small apertures (DN25 to DN300).
(5) The instrument is still lack of test data in pulsating flow and mixed flow.
Wuxi Feiyiya Environmental Protection Technology Co., Ltd. , https://www.fefinegrille.com