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1. What should be noted when installing an intelligent vortex flowmeter?
High precision flowmeter Intelligent vortex flowmeter is a new type of flowmeter based on the principle of Karman Street.. Since the 1970s, it has rapidly developed and been widely applied in various fields. The intelligent vortex flow sensor is suitable for measuring the mass flow rate and volume flow rate of superheated base steam, saturated steam, compressed air, general gas, water, and nightlife. The structure is simple and sturdy, with no movable parts, high reliability, and very reliable for long-term operation. The shape and size of the generator are related, and there is no need for compensation when measuring the flow volume and flow rate. It is easy to install and maintain. After replacing accessories for two spring outings, there is generally no need to recalibrate the instrument coefficients. Its output is a pulse signal proportional to the flow rate, with stable performance, long lifespan, and high accuracy. The pressure loss is relatively small, the operating cost is low, and it has energy-saving significance. High precision flow meters and intelligent vortex street flow meters should be installed at the correct location. Minor errors during installation can affect measurement accuracy, while severe errors can affect the sensors lifespan and even damage it. Considering the convenience of installation and disassembly, a pipeline expansion joint can be installed after the flowmeter. If a valve is installed near the upstream of the sensor installation point, constantly opening and closing the valve will greatly affect the service life of the sensor and easily cause permanent damage to the sensor. Avoid installing sensors o
2. Working principle of vortex flowmeter | Manufacturer interpretation
Vortex flowmeter is a flow measurement instrument designed based on the Karman vortex principle, mainly used for flow detection of gases, liquids, and steam in industrial pipelines.
. The core principle and working process are as follows:1. Core principle: Karman vortex street effect. When the fluid flows through a non streamlined vortex generator (such as a triangular column), two regular vortices will alternately separate on both sides of the generator, forming Karman vortex streets. The release frequency (f) of the vortex is related to the fluid flow velocity (v) and the characteristic width of the generating body (d) as follows: f=Sr × (v/d), where Sr (Strouhal number) is a dimensionless constant that remains stable within a specific Reynolds number range (
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