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Flow meter for measuring gas flow rate

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What are the measurement ranges of turbine flow meters?

1、 Turbine flowmeter is based on the electromagnetic induction generated by the rotation of turbine blades inside the flowmeter to measure the flow rate. It can measure both liquids and gases, and is very sensitive. The diameter for measuring liquids is generally DN4- DN200, and for measuring gases it is generally DN20- DN300;

2、 Turbine flowmeter measures liquids with a very small diameter and good economy. The units are generally m3/h (cubic meter/hour), L/min (liter/base silver minute), etc. It has instantaneous flow display and cumulative flow display;

3、 The measurement range corresponding to different diameters of turbine flow meters is: liquid measurement: (unit of measurement: m3/h): DN4: 0.04--0.25; DN6：0.1---0.6； DN10：0.2---1.2； DN15：0.6---6； DN20：0.8---8； DN25：1---10； DN32

1.5---15； DN40：2---20； DN50：4---40； DN65：7---70； DN80：10---100； DN100：20---200； ..... Gas measurement: (unit: m3/h): DN20:5-40; DN25：7.2---60； DN32：12---100； DN40：18---150； DN50：30---300； DN65：50---420； DN80：70---600； DN100：120---1000； ..... For more detailed information, please refer to the technical article on the website of Shandong Qiangsheng Automation Technology Co., Ltd.... Www.qszdh.com

2. Types of gas flow meters

There are various types of gas flow meters, including the following. 1. Volumetric gas flowmeter: determines the flow rate by measuring the volume of gas inside the instrument. It uses mechanical measuring elements to continuously divide the fluid into individual fixed volume parts, and then accumulates the total amount of fluid, such as a household gas meter, which measures accurately and

Flow meter for measuring gas flow rate
is less affected by fluid properties. 2. Turbine gas flowmeter: It works based on the principle that the fluid impacts the turbine rotation, and the turbine speed is proportional to the fluid flow velocity. It has the advantages of high accuracy, good repeatability, and wide range ratio, and can quickly respond to changes in flow rate. It is commonly used for measuring gas flow rates such as natural gas. 3. Vortex gas flowmeter: Place a non flow hysteresis type object in the fluid, and when the fluid passes around the object, a regular vortex column will be formed. The flow rate is measured by detecting the vortex frequency. It has a simple structure, easy installation, and a wide range of applications. 4. Thermal gas flowmeter: It uses the principle of thermal conduction to measure gas flow and is divided into two types: constant temperature difference and constant power. Can directly measure gas mass flow rate, has good adaptability to temperature and pressure changes, and is commonly used for gas flow monitoring in industrial production. Ultrasonic gas flowmeter: calculates flow rate and flow rate by detecting the time difference of ultrasonic propagation in the fluid. It has the advantages of high accuracy, no pressure loss, and bidirectional measurement, and is widely used in the measurement of gas flow in large-diameter pipes.

3. How to choose a suitable gas mass flowmeter

Choosing a suitable gas mass flowmeter requires consideration of actual needs and comprehensive factors. The following is a specific selection guide

1. Clarify the measurement range. The measurement range of a gas mass flowmeter is usually 0.1 to 1000 Nm3/h, and the model that matches the coverage range should be selected acc

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