What are the gas flow measurement methods?

sales01@cxflowmeter.com

Gas flow measurement is a common measurement work in industrial production. Its purpose is to control and regulate gas flow to ensure 

the stability and safety of the production process. in gas

There are many commonly used methods for flow measurement, which are introduced below.

1. Pressure difference method

The differential pressure method is a common gas flow measurement method that uses the pressure difference of the flow meter

Pressure sensors measure the pressure difference as the gas passes through the pipe, thereby calculating the gas flow rate. The 

difference is that the advantage of the pressure method is that it has a wide measurement range, can be suitable for flow measurement 

of various gases, and also has high accuracy and stability. However, the disadvantage of the differential pressure method is that it

 requires the installation of differential pressure sensors, instruments and flow meters, which is expensive and requires regular maintenance 

and calibration.

2. Thermal flow meter

Thermal flow meter is a method of measuring gas flow using thermal sensors. The principle is

    Superheat the gas, measure the temperature difference before and after heating, and calculate the gas flow rate. hot

The flow meter has fast response speed and high accuracy, and is suitable for harsh environments such as high temperature and high 

pressure.

Its advantage is, but its disadvantage is that it has high requirements on the physical properties of the gas and is easily affected by the 

ambient temperature.

The influence of factors such as temperature and humidity.

3. Ultrasonic flow meter

Ultrasonic flow meter is a method of measuring gas flow using ultrasonic waves. The principle is to emit ultrasonic waves, measure 

the propagation speed and direction of ultrasonic waves during gas flow, and calculate the gas flow rate. Ultrasonic flow meter has 

non-contact measurement and fast response speed

The advantage is high accuracy, but the disadvantage is that it requires higher physical properties and flow conditions of the gas.

High and easily affected by factors such as dirt on the inner wall of the pipeline and impurities in the gas.

4.Mass flow meter

Mass flow meter is a method of measuring gas flow using a mass sensor. The principle is

Gas flow is calculated by measuring the change in mass of the gas as it passes through the pipe. quality

The flow meter has high accuracy and is suitable for measuring the flow rate of various gases and is not affected by gas substances.

The advantage is that it is affected by physical properties and flow state, etc. The disadvantage is that the cost is high and it requires

Regular maintenance and calibration.

There are many ways to measure gas flow, each with its own advantages, disadvantages and applicability. When selecting a gas flow 

measurement method, various factors need to be considered based on the actual situation.

Choose the most appropriate method. At the same time, measuring equipment needs to be maintained and calibrated regularly,

Ensure the accuracy and reliability of measurement results.

If you want to know more, please contact winny: sales01@cxflowmeter.com