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What are the classifications of flow meters? Classification and selection of flow meters
What are the classifications of flow meters? Introduction to the classification and selection of flow meters: In industrial production and process control, flow meters are a very important instrument and equipment used to measure the flow rate of liquids, gases, or vapors. The classification and selection of flow meters are crucial for the correct selection and application of flow meters. This article will introduce the classification and selection of flow meters, helping readers better understand the types of flow meters and choose the flow meter that suits their needs.
1. Classification by measurement principle 1 Mechanical flowmeter: A mechanical flowmeter determines the flow rate by measuring the volume or mass of fluid passing through a pipeline. Common mechanical flow meters include volumetric flow meters, turbine flow meters, and liquid mass flow meters, etc.
2. Dynamic flow meters: Dynamic flow meters calculate flow rates by measuring the velocity and pressure of fluids in pipelines.
. Common dynamic flow meters include porous plate flow meters, nozzle flow meters, and orifice plate flow meters, etc.3. Thermal flow meters: Thermal flow meters calculate flow rates by measuring the cooling effect of fluids on sensors.
. Common thermal flow meters include thermistor flow meters and thermocouple flow meters, etc.4. Mass flow meters: Mass flow meters calculate flow rates by measuring the mass of a fluid. Common mass flow meters include mass flow meters and thermal mass flow meters.
2. Classification by installation method 1 Straight tube flowmeter: A straight tube flowmeter guides
2. Plug in flow meters: Plug in flow meters guide fluid into the pipeline for measurement in plug-in measuring devices.
. Common plug in flow meters include turbine plug in flow meters and electromagnetic plug in flow meters, etc. 3. Non contact flow meters: Non contact flow meters measure without direct contact with the fluid. Common non-contact flow meters include laser flow meters and radar flow meters.III. Classification by Application Field 1 Liquid flow meter: Liquid flow meters are mainly used to measure the flow rate of liquids. Common liquid flow meters include turbine flow meters, electromagnetic flow meters, and ultrasonic flow meters. 2. Gas flow meters: Gas flow meters are mainly used to measure the flow rate of gases. Common gas flow meters include differential pressure flow meters, turbine flow meters, and thermal flow meters. 3. Steam flow meters: Steam flow meters are mainly used to measure the flow rate of steam. Common steam flow meters include differential pressure flow meters, turbine flow meters, and ultrasonic flow meters.
4. Selection Points 1 Fluid properties: When selecting a flowmeter, the properties of the fluid should be considered, such as the viscosity, temperature, and pressure of the liquid, as well as the density, temperature, and pressure of the gas. 2. Measurement range: Determine the measurement range of the flowmeter according to actual needs to ensure that the flowmeter can meet the required flow range. The flow meter is used to ensure the accuracy and reliability of the measurement. Conclusi