Working principle of turbine flowmeter | Which rotor flowmeter is good? Seeking recommendations?

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1. What is the working principle of a turbine flowmeter? A turbine flowmeter is a key tool used to accurately measure fluid flow. The device consists of multiple key components, including a turbine, bearings, preamplifier, and display instrument. These components work together to ensure the accuracy and reliability of fluid flow measurement. The core working principle is to install a turbine at the center of the pipeline, which is supported by bearings and can rotate freely. When the fluid flows through the pipeline, it impacts the turbine blades, generating a driving torque that drives the turbine to rotate. Within a specific flow range, the rotational speed of the turbine is directly proportional to the flow velocity of the fluid. By accurately detecting the rotational speed of the collapsed turbine, we can calculate the fluid flow rate. The speed of the turbine is detected by a sensing coil installed outside the casing. When the turbine blades cut the magnetic field lines generated by the permanent magnet inside the shell, it will cause changes in the magnetic flux in the sensing coil. This change is captured by the sensing coil and converted into an electrical signal, which is amplified and shaped by a preamplifier to generate a pulse signal proportional to the flow rate. These signals are then sent to the unit conversion and flow accumulation circuit for displaying the accumulated flow value; At the same time, they are also fed into the frequency current conversion circuit, which converts them into analog current quantities to indicate instantaneous flow values. In addition to the basic working principle mentioned above, the turbine transmitter also has a unique working principle. When the fluid flows along the axis of the pipeline and impacts the turbine blades, a force proportional to the flow rate, velocity, and fluid density is generated. These forces drive the turbine to rotate, while causing the blades to periodically cut the magnetic field lines generated by the electromagnet, thereby changing the magnetic flux of the coil. According to the principle of electromagnetic induction, this change induces a pulsating electric potential signal in the coil, whose frequency is proportional to the flow rate of the measured fluid. After being amplified by the preamplifier, these signals are sent to the display instrument to measure the flow rate. When evaluating the performance of turbine transmitters, the flow coefficient (ξ) is an important characteristic parameter. Different instruments have different ξ values, which may vary with the wear and tear of the instrument over long-term use. The flow coefficient represents the number of pulses output by the transmitter when a unit volume of flow passes through the transmitter. In summary, turbine flowmeters and their transmitters play a crucial role in the field of fluid measurement. Through their accurate measurement techniques and stable performance, they provide reliable flow data support for various bird species industrial applications. If you have any questions or need further information about turbine flow meters or their application areas, please feel free to contact us - Mike Sensor Co., Ltd.

2. Sharing: What are the differences between impeller flow meters and turbine flow meters?

There are significant differences between impeller flow meters and turbine flow meters in terms of principles, application fields, and structural composition, as follows: Principle di

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