Guangzhou Wenlai LUGB2310NT1-120Y-10 (National Standard 4-inch) Vortex Flow Meter Parameters and Principles:

Principle of Vortex Flow Meter LUGB2310NT1-120Y-10

The basic principle of intelligent vortex flowmeter is the Karman vortex principle, which states that "the vortex separation frequency is proportional to the flow velocity". The diameter of the flow meter body is basically the same as the nominal diameter of the instrument. As shown in Figure 1, there is an approximately isosceles triangle shaped cylinder inserted into the flow body. The axis of the cylinder is perpendicular to the flow direction of the measured medium, and the bottom faces the fluid. When the measured medium flows through the cylinder, vortices are alternately generated on both sides of the cylinder, and the vortices are continuously generated and separated. Two rows of staggered vortices are formed downstream of the cylinder, known as the "vortex street". Theoretical analysis and experiments have shown that the frequency of vortex separation is directly proportional to the flow velocity of the column side medium.

f=(sr*V)/d

In the formula:

F - frequency of vortex separation on the cylinder side (Hz);

V - Column side flow velocity (m/s);

D - width of the upstream face of the column (m);

Sr - Strouhal number. It is a constant that depends on the cross-sectional shape of the cylinder and is essentially independent of fluid properties and flow velocity.

Product Features

The sensor measuring probe is packaged with special technology and can withstand high temperatures up to 350 ℃

Sensitive components are sealed inside the probe body, and the detection components do not come into contact with the measuring medium, resulting in a long service life

The sensor adopts compensation design to improve the seismic resistance of the instrument

Simple structure, no moving parts, high durability

Within the specified Reynolds number range, the measurement is not affected by the temperature, pressure, or viscosity of the medium

Flow meters can be applied in explosion-proof situations with good safety

Wide range ratio, up to 10:1 15:1

Strong universality, capable of measuring unclean gases and liquids

Technical parameters of vortex flowmeter LUGB2310NT1-120Y-10

Environmental temperature: (-40~55) ℃;

Relative humidity: (5-90)%;

Atmospheric pressure: (86-106) Kpa

Nominal diameter: (15-1500) mm (insert structure if larger than 200mm);

Measurement medium: liquid, gas, steam;

Nominal pressure: 1.6Mpa, 2.5Mpa, 4.0Mpa

Medium temperature: (-40~+350) ℃;

Accuracy level: 0.5 level, 1.0 level, 1.5 level, 2.5 level;

Linearity: ≤± 1.5%;

Repeatability: ≤ 0.5%, ≤ 1.0%;

Output signal: voltage pulse;

(4-20) mA DC (two-wire system);

Power supply: Voltage pulse 12V DC or 24V DC;

Current type 24V DC

Intelligent current type 24V DC

Intelligent battery type 3.6V DC

Load resistance: The maximum load resistance should not exceed 350 Ω.

Body material: 304 stainless steel

Connection method: (15-300) mm flange clamp structure or flange connection structure;

(200-1500) mm is an insertable structure;

Protection level: IP65, IP67;

Cable interface: PG10

Explosion proof type: intrinsic safety type; flameproof type

Explosion proof mark: ia Ⅱ CT6; dIIBT4

Basic Principles

Although the search results did not directly mention the principle of DZGB2310NT1-120Y-10, the same type of LUGB2310NT1-120Y-10 intelligent vortex flowmeter is based on the Karman vortex principle, which states that the vortex separation frequency is proportional to the flow velocity. Insert an approximately isosceles triangular cylinder into the flow body, and when the measured medium flows through the cylinder, vortices alternate on both sides of the cylinder, forming vortex streets. Theoretical and experimental evidence shows that the vortex separation frequency is directly proportional to the flow velocity of the medium on the column side, with the formula f=(sr * V)/d, where f is the vortex separation frequency on the column side, V is the flow velocity on the column side, Sr is the Strouhal number, and is a constant that depends on the cross-sectional shape of the column and is essentially independent of fluid properties and flow velocity.