turbine flow meter

NegotiableUpdate on 01/20

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Nature of the Manufacturer: Producers

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Overview

Turbine flowmeter is a velocity type instrument suitable for measuring the volumetric flow rate and total amount of low viscosity gases and liquids. It reflects the fluid flow velocity through the rotational speed of the impeller, and the output signal is frequency modulated with an accuracy of up to $r $n& #177; 0.2%. Widely used in industries such as petroleum, chemical, and metallurgy, it has the advantages of simple structure, high precision, and fast response. During installation, it is necessary to ensure that there is at least a 20D straight pipe section upstream and a 5D straight pipe section downstream, and the liquid should be filled in the pipeline

Product Details

turbine flow meterIt belongs to the velocity flowmeter, also known as the impeller flowmeter. The impeller flowmeter utilizes the proportional relationship between the rotational angular velocity of the impeller placed in the fluid and the fluid flow velocity, and reflects the volume flow rate of the fluid passing through the pipeline by measuring the rotational speed of the impeller. It is one of the more mature high-precision instruments in flow meters.

turbine flow meterWorking principle: The fluid flows through the sensor housing. Due to the angle between the blades of the impeller and the flow direction, the impulse of the fluid causes the blades to have a rotational torque. After overcoming the friction torque and fluid resistance, the blades rotate. After the torque is balanced, the speed is stable. Under certain conditions, the speed is proportional to the flow velocity. Due to the magnetic conductivity of the blades, they are in the magnetic field of the signal detector (composed of magnetic steel and coils). The rotating blades cut the magnetic field lines, periodically changing the magnetic flux of the coil, thereby inducing electricity at both ends of the coil

Pulse signal, which is amplified and shaped by an amplifier to form a continuous rectangular pulse wave with a certain amplitude, can be transmitted remotely to a display instrument to display the instantaneous flow rate and cumulative quantity of the fluid. Within a certain flow range, the pulse frequency f is proportional to the instantaneous flow rate Q of the fluid flowing through the sensor, and the flow equation is Q=3600 × f/k

Where:

F - Pulse frequency [Hz];

K - the instrument coefficient of the sensor [1/m], given by the calibration sheet. If using [1/L] as the unit, Q=3.6 × f/k

Q - instantaneous flow rate of fluid (in working condition) [m3/h];

3600- Conversion factor.

The instrument coefficient of each sensor is filled in the calibration certificate by the manufacturer, and the k value is set in the matching display instrument to display the instantaneous flow rate and cumulative total amount