『Type of air flow meter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. What are the commonly used air flow meters?
The commonly used air flow meters mainly include the following: blade type air flow meter: The blade type air flow meter rotates by the air flow, and the rotation angle or speed of the blade is proportional to the air flow rate, thus achieving the measurement of air flow rate. Karman vortex air flow meter: Karman vortex air flow meter utilizes the principle of Karman vortex generated by fluid behind a specific shaped object (such as a cylinder), and calculates the air flow rate by measuring the frequency of vortex generation. This method has high accuracy and stability. Hot wire air flow meter: The hot wire air flow meter calculates the air flow rate by heating a thin metal wire (hot wire) and measuring the heat lost due to air flow. The faster the air flow rate, the more heat is lost by the hot wire, thus achieving measurement of flow rate. Hot film air flow meter: The hot film open type air flow meter is similar to the hot wire type, but it measures air flow by heating a thin film. This method has the advantages of fast response speed and high measurement accuracy. Summary: Air flow meters are widely used in industrial and automotive fields, and different types of air flow meters have their own advantages and disadvantages. When choosing, it is necessary to consider specific application scenarios and needs. Meanwhile, although air flow meters have many advantages such as low pressure loss, large measurement range, and high accuracy, they cannot measure the flow rates of gases, steam, and purified water, which should be noted during use.
2. What are the commonly used models of low-pressure high flow air flow meters?
The commonly used low-pressure h
1. Thermal gas mass flowmeter 1 Adaptation scenario: Suitable for low-pressure air metering with low flow rate, wide range, and large diameter, it can directly measure mass flow rate without additional temperature and pressure compensation, and has high sensitivity to low flow rate gases. Performance parameters: accuracy of ± 1.0% to ± 1.5% FS, diameter coverage of DN15 to DN2000, and plug-in models can be adapted to ultra large diameter pipelines for infiltration.
2. Anuba/Veliba flowmeter 1 Installation features: Plug in installation does not require pipe breakage, with minimal pressure loss, suitable for measuring large-diameter air ducts, such as factory ventilation and large fan supply scenarios. Advantages and limitations: The pointer type can be read directly on site, with a simple structure and resistance to temperature and visible car spine pressure, suitable for low budget routine monitoring. However, under conditions containing impurities, it is easy to cause blockage of throttling components and needs to be cleaned regularly.
III. LWQ Series Compressed Air Flow Meter 1. Standard Basis: Developed in accordance with GB/T32021-2015 standard, integrated with temperature, pressure, flow sensors and intelligent flow integrator
2. Performance Features: Excellent low-pressure and high-pressure metering performance, flow range ratio of 20:1, good repeatability, accuracy up to 1.0 level, low pressure loss, low initial flow rate
3. Model Example: LWQ-25, nominal diameter DN25, starting flow rate ≤ 0.8m
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