How should the installation direction of a thermal gas mass flowmeter be selected

The data show that in the flow measurement failure probability, the improper selection of flowmeter accounts for about 70%, and the quality of flowmeter products or other reasons account for 30%, which shows how important the selection of flow measurement is.

I believe that friends who understand the thermal gas mass flowmeter know that it can measure a lot of gas flow, why this flowmeter can achieve such a wide range of applications?

Thermal gas mass flowmeters measure gas flow based on the principle of thermal diffusion and transmit electrical signals to computers and other conversion devices through sensors. To ensure the accuracy of thermal gas mass flowmeter measurement, in addition to the quality of the product being up to standard, the installation direction must also be correct; otherwise, it will also affect the measurement accuracy of the thermal gas mass flowmeter. Today, the editor of Aister Instrument, a flowmeter manufacturer, will talk to you about how to choose the installation direction.

The thermal gas mass flowmeter is used for the measurement of a single component of gas or a fixed proportion of mixed gas, and has been widely used in petroleum, chemical, semiconductor, medical instruments, biological engineering, combustion control, gas distribution, environmental monitoring, precision instruments, scientific research, metrology, food, metallurgy, aerospace and other fields.

In the field of industrial gas flow measurement, thermal gas mass flowmeters have become the preferred equipment for scenarios such as natural gas, compressed air, and flue gas monitoring, thanks to their advantages of high precision, low pressure loss, and direct measurement of mass flow. This article will analyze the core value of thermal gas mass flowmeters from three aspects: principle, advantages and typical applications.

How to improve the accuracy of thermal gas mass flow meter?

The thermal gas flowmeter adopts the principle of thermal diffusion, and the thermal diffusion technology is a technology with excellent performance and high reliability under harsh conditions. Typical sensing elements of thermal gas mass flowmeters include two thermal resistors (PT100), one is a speed sensor and one is a temperature sensor that automatically compensates for changes in gas temperature.

Biogas, as a renewable and clean energy source, is widely used in power generation, heating, chemical engineering and other fields. However, biogas has a complex composition (containing CH₄, CO₂, H₂S, water vapor, etc.) and is characterized by corrosiveness, high humidity and large pressure fluctuations, which poses higher requirements for flow measurement. How to choose the right biogas flowmeter? The following five key factors will be analyzed for you!

The application of thermal gas mass flow meter in various industries

A gas flowmeter is an instrument used to measure the flow of gas. Its working principle is based on fluid dynamics, acoustics or mechanical principles, and it determines the flow rate of gas by detecting its flow characteristics in the pipeline. The flowmeters used for measuring gas can be classified into differential pressure flowmeters, turbine flowmeters, vortex flowmeters and mass flowmeters based on different measurement principles. Today, we mainly discuss the key points of using these commonly used gas flowmeters

Thermal gas mass flowmeter is a high-end gas measuring instrument, with many advantages, wide range ratio, plug-in connection mode can be selected when large diameter, convenient for subsequent disassembly and maintenance, various power supply modes, 24V or 220V can be used, ground pipe local display, high altitude pipe separate display, etc. However, thermal gas mass flowmeters are not suitable for all occasions.

Thermal gas mass flowmeter is based on the principle of thermal diffusion design and production of the product is widely used in steel plants, coking plants, petroleum, chemical, thermal, medical, thermal power plants, environmental protection and other industries.

Installing and debugging a thermal mass flowmeter correctly in the early stages is crucial to ensure accurate and reliable measurements. Here are some precautions to take during installation and debugging:

The thermal gas mass flowmeter is equipped with a direct display function. Only through signal transmission can information be directly displayed on the device. If the signal is not displayed, undoubtedly, no matter how good the thermal gas mass flowmeter is, it cannot be used. Therefore, when there is no signal output, it must be solved in time. So how to solve it? Let’s take a look at the suggestions of our engineers together.

The thermal gas mass flowmeter is an instrument for measuring fluid flow by using the principle of heat conduction. The instrument uses constant temperature difference method to accurately measure the gas mass flow. The thermal gas mass flowmeter has the advantages of small size, high digitization, easy installation and accurate measurement.

Thermal gas mass flowmeter is the use of fluid flowing through the pipe heated by an external heat source when the temperature field changes, is a high-sensitivity, high-precision gas measurement instrument, in the gas flow measurement conditions, good stability, used for gas process control and gas flow measurement one of the most used instruments.

Thermal gas mass flowmeter based on the principle of thermal diffusion, using constant temperature difference method designed, is a gas measurement instrument.

The thermal gas mass flowmeter is an instrument that uses the principle of heat conduction to measure flow. The instrument adopts constant temperature difference method for gas mass flow sensor part consists of two reference platinum resistance temperature sensors. Using a bridge loop, one sensor measures the flow temperature and the other maintains a constant temperature difference above the fluid temperature, allowing flow measurement under high temperature and high pressure conditions.

Thermal gas mass flowmeter, gas flow measurement without temperature and pressure compensation, measurement is convenient and accurate.

The thermal gas mass flowmeter is designed based on the principle of thermal diffusion. The meter uses constant temperature difference method to measure the gas accurately. The thermal gas mass flowmeter has the advantages of small volume, high digitization, easy installation and accurate measurement.

What are the advantages and precautions of the thermal gas mass flow meter?

The thermal gas mass flowmeter uses the principle of thermal diffusion, and its working principle determines the change of the measured medium gas with the temperature and pressure, which affects the data change of the measured results.

Like the flue gas, this medium has a higher temperature, contains more impurities such as solid dust, the general application of large caliber, flow rate range is relatively wide, so the measurement is more difficult, so in the selection and use of flue gas flow timing should pay attention to the characteristics of the power plant flue wind speed, pay attention to the principle of choosing sensors, It is also necessary to pay attention to the wear resistance, corrosion resistance, dirt resistance and high temperature resistance of the sensor, and select the appropriate measurement position to ensure the measurement accuracy.

The thermal gas mass flowmeter is an instrument that uses the principle of heat conduction to measure flow. The thermal gas mass flowmeter uses the constant temperature difference method to accurately measure the gas mass flow. It has the advantages of small size, high digitization, easy installation, accurate measurement and so on.

Thermal gas mass flowmeter has certain operating procedures and precautions in use, and must pay attention to these points when in use:

Thermal gas mass flowmeter has certain operating procedures and precautions in use, and must pay attention to these points when in use:

One of the key advantages of thermal mass flow meters is their quick response time, enabling real-time monitoring and control of gas flow in dynamic processes. Moreover, these meters are known for their low pressure drop, minimizing energy consumption and preserving the efficiency of the overall system. With no moving parts, thermal mass flow meters also offer low maintenance requirements, reducing downtime and operational costs for industries relying on precise gas flow measurements.

Response speed: 1s
Output signal: 4-20mA (Photoelectric isolation, large load 500Ω)、
pulse、RS-485 (photoelectric isolation)、HART agreement
Alarm: 1-2 relay normally open contact、10A/220V/AC、*/30V/DC
Type of supply: Separate structure, integrated structure
Pipe material: Carbon steel, stainless steel, plastic, etc
Field display: Four lines of Chinese liquid crystal display
Display content: Mass flow, standard volume flow, cumulative flow, standard time, cumulative running time, standard flow rate, etc
Protection grade: IP65
Sensor material: Stainless steel Stainless steel, carbon steel

Thermal mass flowmeters offer several advantages and disadvantages, which are important to consider when selecting a flow measurement solution. Here are some of the key advantages and disadvantages:

In fields such as industrial process control, HVAC systems, compressed air monitoring, and environmental emission detection, the precise measurement of air flow is of vital importance. Thermal gas mass flowmeters, with their unique working principle and excellent performance, have become the ideal choice for air flow measurement. The following is an analysis of its five core advantages:

Thermal gas mass flow meter is used to measure and control the gas mass flow meter, different from other gas flow meters, do not need to carry out pressure and temperature correction, directly measure the gas mass flow.