『Small flow liquid flowmeter』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 flowmeter is good for slow liquid flow rate? When the liquid flow rate is slow, it is preferred to choose elliptical gear flowmeter, electromagnetic flowmeter or Coriolis mass flowmeter that are sensitive to low flow rate. 1. The elliptical gear flowmeter measures flow rate by a fixed volume driven by liquid to rotate the elliptical gear, with high accuracy (± 0.5%~1%) and minimal viscosity impact. Suitable for high viscosity fluids such as crude oil and Mu Lu lubricating oil, and can maintain accurate measurement even in low flow rate environments. two The electromagnetic flowmeter measures flow velocity based on the principle of generating electromotive force by cutting magnetic induction lines with conductive liquid, with minimal pressure loss and the ability to capture extremely low flow velocities (such as below 0.1m/s). Conductive liquids such as acid, alkali, and salt solutions are commonly used in this type and are widely used in the chemical and water treatment industries. three The Coriolis mass flowmeter utilizes the Coriolis effect generated by fluid vibration to directly measure mass flow rate, with the highest accuracy and no interference from temperature and density. Low flow rate scenarios with strict requirements such as pharmaceuticals and food processing are preferred, but there are high requirements for installation location and liquid cleanliness. 2. 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: introducing fluid into the measuring space, measuring the volume flow velocity of the fluid by calcul
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 Overview: Suitable for measuring fluids with small diameters and low flow rates. Development situation: It still has applications in specific fields, but is gradually being replaced by more advanced flow meters.4. Turbine flow meter principle: When fluid flows through a turbine, the turbine rotates, and the rotational speed
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