『Air quality flow meter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. What are the commonly used models of low-pressure and high flow air flow meters? The commonly used low-pressure and high flow air flow meters mainly include thermal gas mass flow meters, Annubar/Velbar flow meters, LWQ series compressed air flow meters, and universal vortex flow meters.
1. Thermal gas mass flowmeter 1 Adaptation scenario: Suitable for low-pressure air metering with low flow rate, wide range, and large diameter, it can directly measure mass flow rate without additional temperature and pressure compensation, and has high sensitivity to low flow rate gases. Performance parameters: accuracy of ± 1.0% to ± 1.5% FS, diameter coverage of DN15 to DN2000, and plug-in models can be adapted to ultra large diameter pipelines for infiltration.
2. Anuba/Veliba flowmeter 1 Installation features: Plug in installation does not require pipe breakage, with minimal pressure loss, suitable for measuring large-diameter air ducts, such as factory ventilation and large fan supply scenarios. Advantages and limitations: The pointer type can be read directly on site, with a simple structure and resistance to temperature and visible car spine pressure, suitable for low budget routine monitoring. However, under conditions containing impurities, it is easy to cause blockage of throttling components and needs to be cleaned regularly.
III. LWQ Series Compressed Air Flow Meter 1. Standard Basis: Developed in accordance with GB/T32021-2015 standard, integrated with temperature, pressure, flow sensors and intelligent flow integrator
2. Performance Features: Excellent low-pressure and high-pressure metering performance, flow range ratio of 20:1, good repeatability, accuracy up to 1.0 level, low pressure lo
3. Model Example: LWQ-25, nominal diameter DN25, starting flow rate ≤ 0.8m ³/h, flow range 2.5-25m ³/h.
.4. Universal Vortex Flow Meter 1 Adaptation scenario: Suitable for low-pressure air metering scenarios with medium to high flow rates, stable flow rates, and relatively stable pipeline pressures. Performance features: no moving parts, low pressure loss, long service life, with temperature and pressure compensation, accuracy of ± 1.0% R, caliber range of DN15 to DN300. Model example: such as Duoqin DVS-DG15F11U, medium is air, DN15 caliber, body material is 304 stainless steel, working pressure is 1.6MPa, can display instantaneous and cumulative flow on site, supports 4-20mA output, 24V power supply, and ensures flow measurement range of 2.8-12m ³/h for sail accuracy.
2. What is the normal air mass flow rate?
Under normal circumstances, the data flow rate of the air flow meter is about 2.5g/s.
. If this value is lower than 2.0g/s, it usually means that there may be a leak in the intake system. If the value is higher than 4.0g/s, it may indicate that there is a certain pressure in the intake system, that is, an additional load. Mass flow rate refers to the mass of fluid passing through a closed pipeline or open slot with an effective cross-section per unit time, which can be measured in kg/h or kg/s. Mass flow rate and volumetric flow rate are relative to each other, with the latter referring to the volume of fluid passing through per unit time. Mass flow rate can be expressed as the product of volumetric flow rate and fluid density. Specifically, the mass flow rate is obtained by multiplying the volumetric flow rate by the fluid density. This measurement meth
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