『Fluid 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. Types of flow meters
There are many types of flow meters, and according to the most popular and widely used classification method, they can be mainly divided into the following types
1. Principle of volumetric flow meter: Introduce fluid into the measuring space and measure the fluid volume flow rate by calculating the number of rotations.
. Impellers, gears, pistons, or orifice plates are used to divert fluid. Characteristic: High accuracy, it is one of the effective methods for measuring viscous liquids. But it will generate irreparable pressure errors and requires the installation of moving parts. Application Overview: Widely used for accurate measurement of liquid flow rate. Development situation: The technology is mature, but in some high demand situations, more detailed maintenance may be required.2. Principle of differential pressure flowmeter: It uses the pressure difference generated when the fluid passes through the throttling device (such as orifice plate, Venturi tube) to measure the absolute flow rate.
. Features: No mobile parts, widely applicable, easy to use. But it will result in pressure loss, affecting accuracy, and the accuracy of flow measurement depends on the accuracy of the pressure gauge. Application Overview: Can be used to measure the flow rate of most liquids, gases, and vapors. Development situation: As the most common flow technology, differential pressure flowmeter has a wide range of applications and continuous development in the industrial field. Float flowmeter (although not listed in detail, the usual principle is): measures flow by using the buoyancy changes of the float in the fluid. Features: Simple structure, intuitive and easy to read. Application O
4. Turbine flow meter principle: When fluid flows through a turbine, the turbine rotates, and the rotational speed of the rotor is related to the speed of the fluid, thereby deriving the flow rate.
. Features: Can accurately measure clean liquids and gases. But it can also generate irreparable pressure errors that require moving parts. Application Overview: Widely used in situations that require high-precision measurement. Development status: Technology continues to advance, improving measurement accuracy and stability. Principle of electromagnetic flowmeter: Based on Faradays law of electromagnetic induction, the flow rate is derived by measuring the induced potential generated by fluid motion in a magnetic field. Features: No moving parts, unaffected by fluids. The accuracy of measuring conductive liquids is high when the tube is full. Application Overview: Suitable for measuring the flow velocity of conductive liquids, including slurry fluids. Development situation: With the development of electronic technology, the performance of electromagnetic flowmeters continues to improve, and their application scope is also expanding.6. Fluid oscillation flowmeter (vortex flowmeter) principle: A non streamlined vortex generator is placed in the fluid, and the velocity of the vortex is proportional to the velocity of the fluid, thereby calculating the volumetric flow rate.
. Features: No moving parts, no dirt issues. But it will generate noise and require the fluid to have a high flow rate. Application
Hot Blog
Related AD
