Anti vibration vortex flowmeter

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What is the factory price of DN150 vortex flowmeter? The factory price of DN150 vortex flowmeter is affected by the brand, functional configuration, and purchase quantity, and the price range is approximately between 2180 yuan/set and 8821 yuan/set.
1. Specific Price Details (1) Qingdao Hesheng Zhiyuan Automation System Co., Ltd. Product 1 Digital anti vibration vortex flowmeter: The starting price for one set is 8821 yuan, the unit price for two sets is 3681 yuan/set, and the unit price for three or more sets is 2925 yuan/set
2. Prepaid anti vibration vortex flowmeter with supervision and inspection certificate: The starting price for one set is 7029 yuan, and the unit price for two or more sets is 4710 yuan/set. （2） Anhui Ruiling Measuring Instrument Manufacturing Co., Ltd. Product 1 On site display shows that the Famet digital intelligent magneto electric gas vortex flowmeter has a unit price of 3500 yuan/set. （3） Shewei Meter Products 1 The integrated intelligent vortex flowmeter (including DN150 caliber) has a starting price of 2180 yuan per set.

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 (usually 2 × 10 ^ -7 × 10 ^ -2), ensuring a linear relationship between frequency and flow velocity. Figure 1: Schematic diagram of alternating vortices generated by fluid around a triangular column

Analysis of working process: When the fluid flows through the triangular column, vortices are alternately formed on both sides of the generating body due to pressure difference, and the strength of the vortices is proportional to the flow velocity.

. Frequency detection uses piezoelectric sensors, thermal sensors, or ultrasonic sensors to detect pressure fluctuations or flow rate changes caused by vortex shedding, and converts them into electrical signals. The frequency (f) of the pulse signal output by the signal processing sensor is directly related to the flow rate (v), and the flow rate is calculated by the following steps: Flow rate calculation: Obtain the average flow rate of the fluid according to the formula v=(f × d)/Sr. Flow calculation: Combined with the cross-sectional area of the pipeline (A), the volumetric flow rate Q=v × A; if mass flow rate is required, it needs to be multiplied by the fluid density (ρ), that is, M=Q × ρ. Figure 2: Logical process from vortex frequency to flow rate calculation

III. Key technical features Wide measurement range: Reynolds number has a wide range of applications and can cover low flow velocity (0.3m/s) to high flow velocity (40m/s) scenarios. Stable accuracy: The Strouhal number (Sr) remains constant within a specific range, ensuring long-term measurement repeatabili

2. Working principle of vortex flowmeter | Manufacturer interpretation

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