High temperature flue gas flowmeter | Scope of application of industrial dust flowmeter

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1. Formula for calculating flue gas flow rate

2. How is the flue gas flow rate calculated?

3. Scope of application of thermal gas mass flowmeter

4. Scope of application of industrial dust flowmeter

Industrial dust flowmeter is mainly suitable for online monitoring of dust concentration in gas-solid two-phase flow, covering dust removal systems and process pipelines in industries such as power, metallurgy, building materials, and chemical engineering. Applicable industries and working conditions: Power industry: Monitoring of dust concentration at the inlet and outlet of electric dust collectors in coal-fired power plants and in ash conveying pipelines, used to optimize dust removal efficiency and prevent pipeline blockage. Metallurgical industry: Dust monitoring of blast furnace gas dust removal, converter flue gas, sintering machine tail gas, with a concentration range usually ranging from 5-200g/m ³. Building materials industry: Monitoring of dust in rotary kiln tail gas, raw material mill/coal mill outlet, grate cooler exhaust gas, with a maximum working temperature of 400 ℃. Chemical industry: Measurement of dust flow in fluidized bed reactors and pneumatic conveying systems, requiring explosion-proof certification (Ex d IIC T6). 2. Technical type: Suitable for dry dust with particle size of 0.1-100 μ m, with a measurement range of 0.01-1000mg/m ³ and an accuracy of ± 2%. FS light scattering type: for 0.1-10 μ m fine particles have a sensitive response and are suitable for concentrations

ranging from 1 μ g/m ³ to 10g/m ³. Regular cleaning of the optical window is required Radiation absorption type: used for environmental emission monitoring, with a measurement accuracy of ± 0.5 μ g/m ³ (requiring regular replacement of the radiation source). Capacitive type: suitable for high concentration dust (up to 1000g/m ³), but susceptible to changes in material dielectric constant Key selection parameters Pipeline size: DN80-DN3000 standard flange interface, special sizes require customization Process conditions: pressure range -0.1-2.5MPa, temperature -40-450 ℃ (high temperature type can reach 800 ℃) Dust characteristics: particle size distribution, humidity (recommended<30%), conductivity, and corrosiveness need to be clearly defined Output signal: 4-20mA analog+RS485 Modbus communication, some support direct display of dust concentration mg/m ³ 4. Installation precautions Installation position: upstream ≥ 6D from the bend/valve, downstream ≥ 3D (D is the pipe diameter), vertical pipeline preferred flow section from bottom to top Protection level: IP65 required for outdoor installation Above protection, explosion-proof area requirements, explosion-proof shell calibration requirements: zero/range calibration is required for the first installation, and standard dust should be used for comparison and verification every 6 months thereafter (note: the above technical data is based on the 2024 mainstream manufacturer product manual, and the specific selection needs to be confirmed according to the on-site working conditions)