Flow meter sample| reciprocating piston flow meter

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1. Parameters and Outline Diagram of V-cone Flow Meter

There are various types of V-cone flow meters, including flange connection type, flange pressure tapping type, and pipeline welding type. The flange connection type body has a wide range of nominal diameters, from Φ 15 to Φ 2000, suitable for measuring liquids, gases, and vapors. It has strong temperature adaptability and can work in environments ranging from -200 ℃ to+800 ℃. The pressure rating ranges from 1.0MPa to 10.5MPa, with multiple precision grades to choose from, including 0.5, 1.0, 1.5, and 2.5. The body material is mainly stainless steel, while other materials can be provided for pipelines and flanges according to the agreement. The flange pressure type flowmeter also supports nominal diameters ranging from Φ 80 to Φ 2000, suitable for the above media and temperature ranges. The pressure level and accuracy level are consistent with the flange connection type, and the cone material is still stainless steel. The pipeline and flange also support protocol supply, with a β value range of 0.45 to 0.85. For pipeline welding type flow meters, their nominal diameter also covers Φ 15 to Φ 2000, suitable for measuring liquids, gases, and steam. The temperature range and pressure rating are the same as the previous two, and there are also multiple options for accuracy levels. The body material includes stainless steel, and the flange material can be customized according to the agreement. All types of flow meters ensure stable measurement in high-pressure and high-temperature environments.

2. Types and Differences of Flowmeters

Flowmeters are mainly divided into volumetric, velocity, differential pressure, mass, and other categories based on t

heir measurement principles. The core differences lie in their working principles, applicable dielectric properties, and accuracy characteristics.

. 1. Working principle of volumetric flowmeter: The fluid is divided into fixed volume units by mechanical measuring elements, and the flow rate is calculated by counting the number of units. Representative types: elliptical gear, waist wheel, scraper flowmeter. Applicable medium: high viscosity liquids (such as oils, chemical reagents). Accuracy: ± 0.2%~± 0.5% (higher). Characteristics: Sensitive to changes in fluid viscosity, filters need to be installed to prevent jamming. Working principle of velocity flowmeter: flow rate is derived by measuring fluid velocity, usually requiring matching pipeline size data. Representative type: • Electromagnetic flowmeter: Based on Faradays law of electromagnetic induction, it measures conductive liquids (such as water, acidic and alkaline solutions) with an accuracy of ± 0.2%~± 0.5% and no pressure loss. Turbine flowmeter: By driving the turbine to rotate with fluid, it measures low viscosity liquids or gases (such as tap water and natural gas) with an accuracy of ± 0.5%~± 1%, requiring a straight pipe section. • Ultrasonic flowmeter: uses the time difference of sound waves propagating in the fluid to measure speed, suitable for large-diameter pipelines (such as municipal water supply), with an accuracy of ± 1%~± 2%, and can be externally clamped.

3. Differential pressure flowmeter working principle: Based on the Bernoulli equation, the flow rate is calculated by measuring the pressure difference before and after the throttling element. Representative types: orifice plate, V-cone, Venturi tube. Applicable media: steam, gas, liqui

Flow meter sample

1. Parameters and Outline Diagram of V-cone Flow Meter

2. Types and Differences of Flowmeters

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