Current position > News detail
『Accuracy of vortex flowmeter』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
1. Doppler flowmeter
2. What are the differences between electromagnetic flowmeter and vortex flowmeter?
The difference between electromagnetic flowmeter and vortex flowmeter. Electromagnetic flowmeter and vortex flowmeter are two commonly used flowmeters, and they have significant differences in working principle, application range, accuracy and stability, as well as characteristics..
1. Working principle of electromagnetic flowmeter: It works based on Faradays law of electromagnetic induction.
. Install a pair of detection electrodes or electrodes perpendicular to the axis of the measuring tube and the magnetic field lines on the tube wall. When the conductive liquid moves along the axis of the measuring tube, it cuts the magnetic field lines and generates an induced potential. This induced potential is detected by the two electrodes on the measuring tube to calculate the flow rate. Vortex flowmeter: operates based on the principle of "Karman vortex street". Set up a non streamlined flow element (such as a triangular cylinder vortex generator) in the fluid. When the flow velocity is high enough, a vortex will be generated downstream of the flow element. The frequency of the vortex is linearly related to the medium flow velocity within a certain range. The flow rate of the fluid can be calculated by measuring the vortex frequency.2. Scope of Application Electromagnetic flowmeter: Generally only applicable to conductive liquids, with high requirements for the purity of the medium.
. Due to the limitations of its working principle, it cannot measure non-conductive media. Electromagnetic flow meters are widely used in fields such as chemical engineering, water treatment, and fo
III. Accuracy and Stability Electromagnetic flowmeter: With high accuracy and stability, it can achieve an accuracy of 0.5%, making it more suitable for high-precision measurements.
. Vortex flowmeter: The accuracy and stability are relatively low, generally between 1% and 2%.4. Characteristics: Electromagnetic flowmeter: high accuracy, strong applicability, and can measure multiple media.
. Strong anti-interference ability and can be used in various harsh environments. High reliability, stable working performance, and long lifespan. Small size, light weight, easy to install and move. There are various display modes, making it convenient for users to monitor and process data in real-time. Vortex flowmeter: small pressure loss, large range. When measuring the volumetric flow rate under working conditions, it is almost unaffected by parameters such as fluid density, pressure, temperature, viscosity, etc. No movable mechanical parts, therefore high reliability and low maintenance. The instrument parameters can be stable for a long time and can operate within a wide temperature range. There are analog standard signals and digital pulse signal outputs, which are easy to use in conjunction with digital systems such as computers. In summary, electromagnetic flowmeters and vortex flowmeters have their own advantages in