Vortex flowmeter factory | Calculation formula for frequency and flow rate of vortex flowmeter?

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1. How much does a set of DN150 vortex flowmeter cost?

The price of DN150 vortex flowmeter varies significantly, with the mainstream price range ranging from 2899 yuan to 20000 yuan. The specific price is determined by factors such as material, accuracy, protection level, explosion-proof requirements, communication function, and procurement batch.

1. Public quotation reference 1 Two product quotations from Qingdao Hesheng Zhiyuan Automation System Co., Ltd.:

(1) Special Equipment Supervision and Inspection Digital Vortex Flow Meter: The starting unit price for one set is 8620 yuan, the unit price for two sets is 3123 yuan, and the unit price for three or more sets is 2899 yuan;

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(2) Seismic vortex flowmeter: The starting unit price for one set is 7447 yuan, the unit price for two sets is 3958 yuan, and the unit price for three or more sets is 2922 yuan; 2. General configuration price range: The price range for domestic conventional DN50-DN200 vortex flowmeter is 4500-20000 yuan, and the price range for imported products is 8000-75000 yuan, covering DN150 specification products; 3. Special configuration markup rules: The price of high-temperature and explosion-proof products will increase by 30% -50% compared to conventional models; 4. Large scale customized quotation: The new DY150 vortex street flow brother bridge quantity meter (4-20mA output) requires a minimum of 100 units for batch, with a unit price range of 440-4400 yuan.

2. Working principle of vortex flowmeter

The working principle of vortex flowmeter is based on the Karman vortex phenomenon for flow measurement.

. The following is a detailed explanation of its working principle: The vortex flowmeter is mainly Vortex flowmeter factory

composed of a vortex generator, a detection probe, and corresponding electronic circuits. When a fluid flows through a vortex generator (such as a cylinder), two alternating rows of vortices are formed on both sides, which are called Karman vortex streets. The formation of Karman vortex street is an important phenomenon in fluid dynamics, which manifests as a series of ordered and alternately arranged vortices on both sides of an obstacle when the fluid passes over it. The frequency of vortex separation is directly proportional to the flow velocity of the sluggish fluid and inversely proportional to the width of the vortex generator. This relationship can be represented by a specific formula, where the vortex separation frequency f, dimensionless constant St (Strouhal number), average fluid velocity V in the pipeline, upstream face width d of the cylinder, and inner diameter D of the sensor housing are all key parameters that affect the measurement results. The Strouhal number St is a function of the Reynolds number Re for a specific type of vortex in a certain flow range. The linear part of the St and Re functions is the linear measurement range of the vortex flow sensor. By detecting the separation frequency of these vortices, the flow velocity and instantaneous flow rate of the fluid can be measured. Specifically, when the vortex alternately separates on both sides behind the cylinder, pressure pulsation is generated, which causes the detection object (also known as the probe) in the sensor to be subjected to alternating force. The piezoelectric crystal components embedded in the detection body will generate charge frequency signals when subjected to alternating forces. After being processed by the detection circuit,

Vortex flowmeter factory | Calculation formula for frequency and flow rate of vortex flowmeter?

1. How much does a set of DN150 vortex flowmeter cost?

2. Working principle of vortex flowmeter

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