Rotary flowmeter | Flow calculation formula for metal rotary flowmeter

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1. The measurement range of a rotor flowmeter is very wide. The measurement range of the root selling spine varies depending on different working conditions and fluid types. Here are some key points about the measurement range of the rotor flowmeter: corrosion-resistant rotor flowmeter: diameter DN 15: air flow range of 0.07~0.7 m3/h, water flow range of 2.5~25 L/h. DN 160: The air flow rate range is 0.40-4.0 m3/h, and the water flow rate range is 16-160 L/h. DN 250: The air flow rate range is 0.70-7.0 m3/h, and the water flow rate range is 25-250 L/h. Note: The flow range for DN 16 here is given in kPa units, which is clearly incorrect and should be in flow units. However, to maintain the original meaning, no changes have been made. In practical applications, specific product manuals should be consulted. Ordinary rotor flowmeter: DN 50 diameter: air flow range of 1.60~16 m3/h, water flow range of 60~600 L/h. DN 100: The air flow range is 10-100 m3/h, and the water flow range is 400-4000 L/h. DN 250: The air and water flow ranges from 2500 to 25000 L/h. Maximum pressure loss: The maximum pressure loss value varies depending on the specifications, ranging from 2.5 kPa to 100 kPa. In summary, the measurement range of a rotor flowmeter depends on its specifications, diameter, and the type of fluid being measured. When selecting a suitable model of rotary flow meter for early delivery, actual working conditions and measurement requirements should be fully considered to ensure the accuracy and applicability of the measurement.

2. Working principle of gas rotor flowmeter

The working principle of gas rotor flowmeter is that when gas flows through a vertical conical tube from bottom to top, it will push a free

ly suspended rotor (or float) inside the tube to rise.

. After reaching an equilibrium position, the rotor comes to a standstill, and the lift of the gas on the rotor is exactly equal to its gravity. By reading the corresponding position of the rotor on the scale of the conical tube, the instantaneous flow rate value of the gas can be directly obtained. 1. The core workflow is based on the principle of variable area measurement: - Gas enters from the bottom of the flowmeter, passes through the annular gap between the rotor and the inner wall of the conical tube, and flows out from the top. -When the gas flow rate increases, the lift generated by the gas on the rotor increases, which will cause the rotor to find a new equilibrium point in a wider conical tube area, that is, the rotor rises and the annular area increases, resulting in a larger angle. -When the rotor is stable, its gravity (minus gas buoyancy) reaches dynamic equilibrium with the pressure differential force (lift) generated by the gas on the vibration source rotor. -The suspension height of the rotor is approximately linearly related to the volumetric flow rate of the gas, and the flow rate value can be directly read through the celery scale on the cone tube.

2. Key components • Cone tube: usually made of glass, metal, or plastic, with a scale on the inner wall, and the diameter gradually decreases from top to bottom. • Rotor (float): an induction element suspended in a conical tube, with various shapes such as spherical and inclined groove, and a material density greater than that of the measured gas. Sealing and connecting components: Ensure a sealed connection between the flowmeter and the pipeline system to prevent gas leakage. • Indicator/Sens

Rotary flowmeter | Flow calculation formula for metal rotary flowmeter

2. Working principle of gas rotor flowmeter

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