turbine flowmeter working principle

Email: sales01@cxflowmeter.com

whatsapp: 008618049841995

The working principle of turbine flow meter is mainly based on the principle of fluid dynamics. The flow rate is determined by measuring the

 frequency generated by the fluid passing through the rotating turbine. The following is a detailed explanation:

I. Basic principle

The turbine flow meter is a velocity flow meter that uses fluid to drive the turbine blades to rotate. The rotation speed of the turbine is

 proportional to the flow rate of the fluid. This principle is based on the conservation of fluid momentum, that is, there is a certain relationship 

between the driving torque of the fluid on the turbine blades and the rotation angular velocity of the turbine.

II. Working process

Fluid drives the turbine to rotate:

When the fluid enters the turbine flow meter, it impacts the turbine blades and generates a driving torque on the turbine.

Within a certain flow range, for a certain fluid medium viscosity, the rotation angular velocity of the turbine is proportional to the fluid 

flow rate.

Sensor detects rotation frequency:

The turbine flow meter has a built-in sensor (such as an electromagnetic induction sensor or a photoelectric sensor) to detect the rotation

 frequency of the turbine.

When the turbine blades rotate, it periodically cuts the magnetic lines of force generated by the electromagnet (for electromagnetic induction 

sensors) or blocks the light of the photoelectric sensor (for photoelectric sensors), thereby generating an electrical pulse signal.

The frequency of the electrical pulse signal is proportional to the rotation speed of the turbine, that is, proportional to the flow rate of the fluid.

Signal processing and display:

The electrical pulse signal detected by the sensor is amplified and shaped by the preamplifier and sent to the display instrument or control 

system.

The display instrument or control system processes the signal, converts the rotation frequency into a flow value, and displays it on the display.

At the same time, the flow signal can also be output as a pulse signal or current signal (such as 4-20mA) for communication or control with 

other devices.

III. Technical features

High measurement accuracy: The turbine flowmeter has high accuracy, and its measurement error is usually very small, which can meet the

 needs of various industrial occasions.

Good repeatability and stability: When the turbine flowmeter measures the same flow multiple times, the results have good repeatability 

and good stability for long-term use.

Wide range: The turbine flowmeter has a range ratio of up to 10:1, which can measure flow rates in different ranges.

Quick response: The turbine flowmeter responds quickly to flow changes and can reflect flow changes in real time.

Strong anti-interference ability: The output signal of the turbine flowmeter is a frequency modulated signal with strong anti-interference 

ability and easy signal transmission.

IV. Application field

Due to its above advantages, the turbine flowmeter has been widely used in the fields of petroleum, chemical industry, electricity, gas 

pipeline network, urban gas, etc. In addition, it has also been widely used in some special departments such as scientific research experiments,

 national defense science and technology, and measurement departments.

V. Precautions

The turbine flowmeter has high requirements for the cleanliness of the measured medium. If the medium contains impurities or particulate

 matter, it may affect the measurement accuracy and the service life of the turbine.

The service life of the turbine flowmeter may be subject to certain restrictions, and regular maintenance and calibration are required to ensure 

measurement accuracy.

When installing and using the turbine flowmeter, it is necessary to follow the relevant operating procedures and precautions to ensure its

 normal operation and the accuracy of the measurement results.

If you are looking for a suitable turbine flow meter, please consult CIXIFM winny: 

Email: sales01@cxflowmeter.com

whatsapp: 008618049841995