LX Differential Pressure Wedge Flow Meter

Accuracy Class 0.5(0.2,0.3,0.4 customize)
Long-term Stability ± 0.2% F.S / Y
Repeatability ± 0.2%
Medium All kinds of liquid, gas and steam
Min Flow Rate 0.01m/s
Measuring Range Normal: 1:25, max:1:33
Pressure Loss About 1/5 of measuring differential pressure
(1/3 orifice plate)
Reynolds Number Scope Upper limit 500, upper limit≦1×107
Medium Viscosity 500mpa.s or more
Working Pressure Scope -0.1~42MPa
Working Temperature Scope -160℃~450℃(max 700℃)
Pipe Size DN10mm~DN1200mm(max 2500mm)
DP Transmitter Power Output Supply 4mA ~ 20mA DC (HART), 24VDC

High Accuracy, Anti-Interference and Anti-Vibration, Pulse Signal Output

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Flowmeter

Differential Pressure Flowmeter

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Product Details

LX wedge flow meter is a type of differential pressure flow meter used to measure the flow rate of fluids in a pipeline. It is especially effective for handling slurries, viscous fluids, and fluids with suspended solids due to its robust design and ability to resist clogging. Here’s an overview of its key features, components, and applications:
Wedge Element: The core of the flow meter is a V-shaped wedge inserted into the flow path. This wedge creates a restriction, causing a differential pressure to develop across it.
Pressure Taps: Located upstream and downstream of the wedge, these taps measure the pressure differential created by the flow restriction.
Body: The meter body, usually made from durable materials like stainless steel or carbon steel, houses the wedge and pressure taps.
Transmitters and Sensors: Differential pressure transmitters and sensors are connected to the pressure taps to measure and transmit the pressure difference.
Working Principle
The wedge flow meter operates on the principle of differential pressure measurement. As the fluid flows through the pipeline and encounters the wedge, a pressure drop occurs across the wedge element. The magnitude of this pressure drop is proportional to the flow rate. By measuring this pressure differential, the flow rate can be calculated using Bernoulli's equation and appropriate calibration constants.
Applications
Slurry and Viscous Fluid Measurement: Ideal for measuring the flow of slurries, highly viscous fluids, and fluids with high particulate content.
Chemical Processing: Used in industries where fluids with varying properties need to be measured accurately.
Wastewater Treatment: Suitable for monitoring and measuring the flow of wastewater, sludge, and other similar fluids.
Oil and Gas: Applied in the measurement of crude oil, drilling fluids, and other heavy hydrocarbons.
Advantages
Resilience to Clogging: The V-shaped wedge design minimizes the risk of clogging, making it suitable for fluids with suspended solids.
Wide Range of Applications: Capable of measuring a variety of fluids, including slurries, viscous liquids, and clean fluids.
Durability: Constructed from robust materials, wedge flow meters can withstand harsh industrial environments.
Accurate and Reliable: Provides accurate flow measurements even in challenging conditions.
Calibration
Wedge flow meters need to be calibrated to ensure accurate flow measurements.
Factory Calibration: Performed by the manufacturer to establish baseline performance.
Field Calibration: Conducted periodically to account for changes in operating conditions and fluid properties.
Selection Criteria
When selecting a wedge flow meter, consider the following factors
Fluid Properties: Viscosity, density, particulate content, and corrosiveness of the fluid.
Flow Rate: Required flow measurement range.
Operating Conditions: Pressure, temperature, and environmental conditions.
Material Compatibility: Ensuring the meter body and wedge materials are compatible with the fluid.
In summary, wedge flow meters are highly effective for measuring the flow of challenging fluids in various industrial applications. Their design makes them particularly suitable for slurries and viscous liquids, providing accurate and reliable flow measurements under harsh conditions.
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