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FM350 gas flow sensor

The working principle of the thermal gas mass flowmeter is based on King's Law. The core idea is to directly calculate the mass flow rate of the gas by measuring the heat carried away by the gas as it flows through the sensor. The display direction can be reversed 180°, making it easy to set and view the color crystal display. The cumulative flow data is clear at a glance and monitored in real time.

4-digit LED display

Display accuracy ± 3% F.S.

Repeatability accuracy ± 3% F.S.

The instantaneous flow rate is displayed electronically

Cumulative traffic viewing function

With switch output NPN/PNP output function

Analog quantity: Voltage output 1 to 5 volts

Analog quantity: Current output 4 to 20 mA

    Product Application

    I. Industrial Processes and Control

    Management and leakage detection of compressed air systems

    Application description: Installed on small pneumatic equipment, tools or branch air lines, it can monitor the consumption of compressed air in real time for cost accounting and energy efficiency management. Portable or fixed leak detectors also use it to locate and quantify leak points.

    Combustion control

    Application description: It is used in small boilers, burners, heat treatment furnaces and other equipment to precisely measure the flow of combustion-supporting air (air) or fuel gas (such as natural gas, liquefied gas), in order to achieve the best air-fuel ratio, improve combustion efficiency and reduce emissions.

    Process gas monitoring

    Application description: In industries such as chemical engineering, food, and pharmaceuticals, it is used to monitor the flow of various process gases during production, such as the intake gas of reaction vessels (nitrogen, carbon dioxide, oxygen), protective gas of packaging lines, and ventilation volume during the fermentation process, etc.

    Pneumatic conveying and powder material conveying

    Application description: In dilute-phase or dense-phase pneumatic conveying systems, monitor the flow rate of the carrier gas to ensure stable and efficient material transportation and prevent pipeline blockage.

     


    Ii. Environmental Monitoring and Energy Management

    Process control of aeration in sewage treatment

    Application description: On the branch lines of small-scale sewage treatment facilities or aeration tanks, precisely control the amount of air blown in to provide the best living environment for aerobic bacteria.

    Energy audit and carbon accounting

    Application description: As a temporarily or permanently installed instrument, it measures the consumption of energy media such as gas and compressed air in workshops, production lines or individual equipment, providing data support for energy audits and carbon emission calculations.

     


    Iii. New Energy and High-tech Manufacturing

    Semiconductor and electronic manufacturing

    Application description: In processes such as wafer fabrication and MOCVD (Metal-Organic Compound Chemical Vapor Deposition), precisely control the flow rate of special gases (such as silane, phospane, helium, etc.) delivered to the reaction chamber.

    3D printing and laser cutting

    Application description: In metal 3D printing (SLM), control the flow rate of protective gas (usually argon or nitrogen) to prevent oxidation of printed parts. In laser cutting, monitor the flow rate of auxiliary gases (oxygen, nitrogen).

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