『Renault 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)

1. Working principle and main characteristics of gas flowmeter
Working principle of gas flowmeter: Gas flowmeter is a new type of flow measurement instrument made based on the principle of "Karman vortex". When a stable fluid flows through a straight pipeline of a certain length, it will collide with a nonlinear cylinder immersed in the fluid, thereby generating a vortex downstream of the fluid, known as the Karman vortex. The occurrence pattern of vortices is stable and reliable within a certain Reynolds number (Re) range. The frequency F of vortex occurrence is determined by the formula F=(St * V)/d, where V is the flow velocity and d is the width of the upstream face of the cylinder. By measuring the frequency of the vortex, the flow velocity and flow rate of the fluid can be accurately calculated. The main characteristics of gas flow meters are: simple and sturdy structure: gas flow meters have no movable parts, simple and sturdy structure, therefore they have extremely high reliability and long-term stable operation. Easy installation and maintenance: Due to its simple structure, the installation process of gas flow meters is relatively easy, and maintenance is also very convenient, reducing the cost of use. Stable performance and long lifespan: The detection sensor does not directly contact the measured medium, avoiding damage to the sensor caused by changes in medium properties, thereby ensuring stable performance and a longer service life. High precision output: The gas flowmeter outputs a pulse signal proportional to the flow rate, without zero drift, thus having high measurement accuracy. Wide measurement range: The range ratio of gas flow meters can reach 1:10, with a wide measurement range and a wi

2. Reynolds number range of turbine flowmeter
The Reynolds number range of turbine flowmeter is closely related to the nominal diameter, and the normal operating Reynolds number range is usually 20000-700000.
. 1. During stable measurement, the Reynolds number range of a turbine flowmeter in normal operation is generally 20000-700000. When it is bel
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