Current position > Product detail
『Principle of glass rotor flowmeter』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)
What is the working principle of LZB glass rotor flowmeter? I urgently need an answer...
Working principle of LZB glass rotor flowmeter: The main measuring element of LZB glass rotor flowmeter is a vertically installed conical glass tube with a small end facing downwards and a large end facing downwards, as well as a float that can move up and down inside. When the fluid flows from bottom to top through the cone management, a differential pressure is generated between the upper and lower parts of the float, and the float rises under this differential pressure. When the force of early rise on the float is equal to the combined force of gravity, buoyancy, and viscosity, the float is in an equilibrium position.. Therefore, there is a certain proportional relationship between the fluid flow rate flowing through the instrument and the rising height of the float, that is, the flow area of the LZB glass rotor flowmeter. The position height of the float can be used as a measure of flow rate.
2. How does a glass rotor flowmeter work? The main measuring components of a glass rotor flowmeter are a vertically installed conical glass tube and a float that can move up and down inside. The conical tube is facing upwards, and when the fluid is held in the conical glass tube from bottom to top, a pressure difference is generated between the upper and lower parts of the float, and the float rises under this pressure difference. When the force that causes the float to rise is equal to the combined force of gravity, float, and viscous force acting on the float, the float is in an equilibrium position. Therefore, there is a certain proportional relationship between the fluid flow rate flowing through the glass rotor 
3. Calculation formula for flow value of 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 t