Types of gas flow meters and their applications

Gas flowmeter is a kind of instrument to measure gas flow, usually used in industrial process control, environmental protection monitoring, research and experiment and other fields. According to its working principle and different application scope, gas flowmeter can be divided into many types. In this article, will introduce several common gas flowmeter and its application range.

1. Float gas flowmeter

Float type gas flowmeter is a kind of instrument to measure the gas flow by observing the rise or fall of the float. When the gas passes through the meter, the float is subjected to the force of the gas flow and thus rises or falls. The position of the float reflects the flow rate of the gas.

Float type gas flow meter is suitable for low flow rate gas measurement, such as oxygen flow measurement in medical equipment. Due to its low measurement accuracy, it is not suitable for industrial applications that require high precision measurements.

2. Combustion Gas Flow Meter

Combustion gas flow meter is a kind of instrument to measure gas flow by burning gas. The heat generated during combustion can be measured to calculate the flow rate of the gas. Combustion gas flowmeter can measure a variety of gases, including natural gas, liquefied petroleum gas and so on.

Combustion gas flow meters are suitable for industrial applications that require high accuracy measurements, such as flow measurement for natural gas transmission and processing. As they require combustion, they need to be used with safety in mind.

3. Thermal Gas Flow Meter

A thermal gas flow meter is an instrument that measures the flow of a gas by measuring the heat generated by the gas as it passes through a sensor. When the gas flows through the sensor, the sensor will be heated. Measuring the temperature change of the sensor can reflect the size of the gas flow.

Thermal gas flow meters are suitable for industrial applications that require highly accurate measurements, such as semiconductor manufacturing and medical oxygen supply. Since they require heating of the sensor, care needs to be taken to protect the sensor when in use.

4. Mass Flow Meter

A mass flow meter is an instrument that measures gas flow by measuring the mass flow rate of a gas. Mass flow meters usually use thermal sensors or compression sensors to measure the mass flow rate of a gas, and then calculate the actual flow rate of the gas by combining temperature, pressure and other parameters.

Mass flow meters are suitable for a wide range of gas measurements, including gas mixtures and gas-liquid two-phase flow measurements. Because of its ability to accurately measure the mass flow rate of gases, it is widely used in industrial process control, environmental protection monitoring, research experiments and other fields.

5.Ultrasonic flowmeter

Ultrasonic flowmeter is a kind of instrument to measure the gas flow by measuring the ultrasonic wave propagation speed in the gas fluid. Ultrasonic propagation speed in the fluid by the fluid flow rate and flow size, so you can measure the ultrasonic propagation speed to calculate the gas flow.

Ultrasonic flow meter is suitable for a variety of gas measurement, including high temperature and high pressure gas, corrosive gases and viscous gases. Because it does not need to touch the fluid, so there is no need to worry about fluid contamination or corrosion when in use.

In short, different types of gas flow meters have different working principles and scope of application. When choosing a gas flowmeter, you need to choose the right type according to the specific application requirements, and pay attention to maintenance and repair to ensure its measurement accuracy and service life.