Rotary flowmeter | Types and principles of flowmeters

『Rotary 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)

Why is the rotor flowmeter called a constant pressure drop flowmeter? This is the principle difference between rotor and differential pressure flowmeters. 1. The internal structure of the rotor flowmeter sensor is uniform, and the structure of the float is also designed with low pressure loss (relatively stable pressure). 2. The internal structure of the differential pressure flowmeter sensor is also uniform, but there is a cone. (The differential pressure type is based on the energy conversion principle in the sealed pipeline, which means that for stable fluids, the pipeline pressure is inversely proportional to the square of the medium flow velocity in the pipeline: as the speed of collapse increases, the pressure will decrease.) The working principle of the float shielded flowmeter (also known as the rotor flowmeter) is different from that of the differential pressure flowmeter. Differential pressure flowmeter reflects the magnitude of flow sensation through changes in differential pressure under the condition of constant throttling area (such as orifice plate flow area). However, the float flowmeter measures the flow rate by keeping the pressure drop constant and using the change in throttling area, that is, the float flowmeter adopts the flow measurement method of constant pressure drop and variable throttling area. If you have any questions about the intelligent system of Shenzhen AVIC Computer, please consult

2. Why is the rotor flowmeter called a constant pressure drop flowmeter? The differential pressure flowmeter is a variable pressure drop flowmeter

The rotor flowmeter is a constant pressure drop flowmeter, while the differential pressure flowmeter is a variable pressure drop flowmeter. The

reasons are as follows: rotor flowmeter: constant pressure drop characteristics: the internal design of the rotor flowmeter sensor is uniform, and the core float structure adopts a low pressure loss design.. This design ensures that the pressure loss of the fluid passing through the flowmeter is relatively small, and the pressure drop remains relatively stable throughout the entire measurement range. Therefore, the rotor flowmeter is considered as a constant pressure drop flowmeter. Differential pressure flowmeter: pressure drop characteristics: The sensor of differential pressure flowmeter usually contains a cone or other shaped variable structure inside. This design is based on the principle of energy conversion in sealed pipelines, which means that when the fluid passes through structures such as cones, the flow velocity increases and the pressure decreases accordingly. Due to the inverse relationship between flow rate and pressure, differential pressure flow meters exhibit significant pressure drop characteristics during the measurement process. This is also the reason why differential pressure flow meters are called variable pressure drop flow meters. In summary, the main difference between the pressure drop characteristics of the Zhuanqiqiaozi flowmeter and the differential pressure flowmeter lies in their internal structure and measurement principles.

3. 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 form

Rotary flowmeter | Types and principles of flowmeters

2. Why is the rotor flowmeter called a constant pressure drop flowmeter? The differential pressure flowmeter is a variable pressure drop flowmeter

3. Flow calculation formula for glass rotor flowmeter

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