What is the approximate price of a rotary flowmeter?

『Rotary flowmeter』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)

1. The difference in working principle between a rotor flowmeter and a differential pressure flowmeter is that the rotor flowmeter is a flowmeter that uses the principle of changing the flow area. When the fluid in the pipeline encounters a blockage, a pressure difference is formed before and after the blockage. The size of this pressure difference is related to the flow area and flow velocity of the fluid when it is blocked. This pressure difference is used to push a movable blockage to move with the flow rate and change the flow area, so that the pressure difference before and after the blockage remains constant. At this time, the position of the blockage is related to the flow rate, and the flow velocity can be obtained, and the flow rate value can be obtained by entering the channel. Differential pressure flowmeter is a flowmeter that utilizes the principle of converting dynamic pressure energy and static pressure energy: (throttling type) In the same closed pipeline, when the fluid flow plate speed increases, its static pressure energy will be converted into dynamic pressure energy. So in the same closed pipeline, the higher the flow velocity, the lower the static pressure. By setting a throttle element in the fluid path to increase the fluid flow rate through the throttle element, a static pressure zone with different bending forces will be formed before and after the throttle element. The square of the pressure difference (differential pressure) is proportional to the flow rate. By measuring the differential pressure and taking the square root, the flow rate value can be obtained.

2. Flow calculation formula for glass rotor flowmeter

The flow calculation formula for glass rotor flowmeter is: Q=K

× √ (Δ P) or Q=C × A × √ (2g Δ h/ρ), where K and C are instrument coefficients and Δ P is pressure difference.

. 1. Core calculation formula: Glass rotor flowmeter belongs to variable area flowmeter, and its flow calculation formula is derived based on the principle of rotor force balance. The most commonly used basic form is: Q=K × √ (Δ P), where: • Q: volume flow rate of fluid (unit: m ³/h or L/min) • K: instrument coefficient (or flow coefficient), determined by the specific structure, rotor shape and material of the flowmeter, usually provided by the manufacturer after factory calibration, and is the core parameter for flow conversion. Δ P: The pressure difference before and after the rotor (unit: Pa), which is balanced with factors such as the rotors gravity, buoyancy, and fluid viscosity during stable flow, and can be regarded as a constant. Another more detailed and physically meaningful formula is: Q=C × A × √ (2g Δ h/ρ), where • C is the outflow coefficient, which is an empirical coefficient related to the Reynolds number and is usually calibrated by the manufacturer. A: The annular gap area between the rotor and the conical tube (unit: m ²) varies with the height of the rotor. • g: Gravity acceleration (9.8 m/s ²) • Δ h: Pressure head difference corresponding to rotor height change bench roll (unit: m) •ρ: Density of the measured fluid (unit: kg/m ³) 2. Flow reading in practical applications. In practical applications, operators do not need to perform tedious calculations. The conical tube wall of the flowmeter is directly engraved with flow scale lines. The method of reading the flow rate value is to observe the scale line corresponding to the highest point (or center) of the rotor, which is the actual flo

2. Flow calculation formula for glass rotor flowmeter

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