Introduction to thermal gas flow meters for gas flow meter selection

Project Overview

1. Principle of Thermal Gas Flowmeter

Thermal gas flowmeter uses a sensor to sense the surface of the sensor where gas flows, and determines the flow rate by measuring the cooling effect of the gas on the sensor. Sensors are usually thin films or filaments that heat when an electric current is passed through them. When the gas flows through the sensor surface, it takes away some of the heat, causing the sensor surface temperature to decrease. The mass and flow rate of the gas flowing through is directly proportional to the cooling effect. Therefore, by measuring the sensor surface temperature change, the gas flow rate can be inferred.

2. Advantages of thermal gas flowmeter

1. Fast response: Thermal gas flowmeter has a fast response speed and can quickly detect flow changes. This makes them very useful in applications that require immediate feedback.

2. Wide range measurement: Thermal gas flow meter can accurately measure within a wide range of flow rates, from small flow rates to large flow rates.

3. Applicable to a variety of gases: Thermal gas flow meters are not limited by gas types and can be used to measure the flow of various gases.

4. No moving parts: Thermal gas flow meters have no mechanical moving parts, so they are not easily damaged and require less maintenance.

5. High accuracy: For most applications, thermal gas flow meters provide sufficient accuracy to meet industrial and laboratory requirements.

3. Applicable scenarios of thermal gas flow meters

1. Chemical industry: In the chemical industry, it is necessary to monitor and control the flow of various gases to ensure the safety of the production process. and efficient. Thermal gas flowmeter can be adapted to the measurement of different gases and is suitable for reactor ventilation, gas transportation and mixing processes.

2. Environmental monitoring: In environmental monitoring, it is necessary to measure the content of various gases in the air, such as carbon dioxide, oxygen, etc. Thermal gas flow meters can provide stable and accurate measurement results, helping with environmental monitoring and air quality assessment.

3. Medical equipment: Thermal gas flow meters are widely used in medical equipment, such as ventilators, anesthesia machines, etc. They are used to monitor the flow of oxygen as the patient breathes, ensuring that the patient is getting an adequate supply of oxygen.

4. Gas metering: In the field of gas metering, thermal gas flow meters can be used for household and industrial purposes. They accurately measure the flow of natural gas, LPG, and more delivered to homes and businesses.

Thermal gas flowmeter is a commonly used flow measurement device. During the selection process, factors such as specific application requirements, gas properties, and budget need to be considered to ensure that the most appropriate thermal gas is selected. flowmeter to meet practical application needs.