Selection of Micro Liquid Flow Meter

Micro liquid flowmeter - Jiangsu Dingsheng Instrument Co., Ltd

In various enterprises such as chemical, food, and textile, flow meters are widely used as measuring instruments. Since they are commonly used, it is particularly important to select suitable flow meters for each manufacturer, because the working environment and working conditions of each factory are different. Therefore, we need to choose different flow meters according to different working conditions to achieve maximum work efficiency for the factory. Below are two liquid flow meters briefly introduced.

There are significant differences between turbine flow meters and electromagnetic flow meters in multiple aspects, mainly reflected in measurement principles, scope of application, accuracy, characteristics, as well as installation and maintenance.

1、 Detail drawing of micro liquid flowmeter:

turbine flow meterIts working principle is based on the impact of the measured fluid on the turbine blades, causing the turbine to rotate, and the speed of the turbine changes with the flow rate. When the flow rate is high, the speed of the turbine is also high. The speed of the turbine is then converted into corresponding frequency pulse signals by an electromagnetic conversion device, amplified by a preamplifier, and sent to a display instrument for counting and display, thereby obtaining instantaneous flow rate and cumulative flow rate.

Electromagnetic FlowmeterIt works based on Faraday's law of electromagnetic induction. When a conductive fluid flows through a magnetic field perpendicular to the direction of flow, an electromotive force (EMF) is induced in the conductor, which is proportional to the flow velocity of the fluid. By measuring this induced electromotive force, the flow rate of the fluid can be calculated.

2、 Selection of two liquid flow meters:

Turbine flowmeter: suitable for measuring non corrosive liquids such as petroleum, fuel, diesel, air, etc. Turbine flow meters are suitable for clean, low viscosity liquids or gases, but are greatly affected by the viscosity and density of the liquid, and are susceptible to coarse particles and water rust.

Electromagnetic flowmeter: It is suitable for measuring conductive liquids such as water, sewage, liquid anthraquinone, salt solutions, etc. Due to its measurement principle not being affected by changes in liquid temperature, pressure, etc., it has wide applications in fields such as chemical engineering, environmental protection, and simulated water treatment.

3、 Precision of micro liquid flowmeter:

Turbine flowmeter: The accuracy is generally ± 1.5% to ± 3%, which is greatly affected by factors such as liquid viscosity, density, particle size, and flow rate fluctuations.

Electromagnetic flowmeter: High accuracy, up to ± 0.5% to ± 1%. Its measurement range is wide and can meet the needs of various occasions.

4、 Product performance of micro liquid flowmeter:

Turbine flowmeter: The cost is relatively low, and for certain specific application scenarios, such as low flow and low pressure situations, turbine flowmeter can replace higher cost measuring instruments. But it is sensitive to the physical properties of liquids and requires a relatively stable fluid environment to ensure measurement accuracy.

Electromagnetic flowmeter: characterized by high precision and long lifespan. Its measurement range is wide, and it can accurately measure from very low flow rates to very high flow rates. At the same time, the installation direction of electromagnetic flow meters is flexible and can be installed horizontally, vertically, or obliquely. In addition, modern electromagnetic flow meters are usually equipped with intelligent diagnostic functions, which improve the convenience and reliability of use.

5、 Installation and after-sales service of micro liquid flowmeter:

Turbine flowmeter: When installing, it is necessary to choose a straight pipe section away from the pump and valve to ensure the stability of the fluid. Due to its inclusion of rotating components, more frequent maintenance may be required to ensure measurement accuracy and service life.

Electromagnetic flowmeter: easy to install, generally using flange connection. Due to the lack of mechanical movable parts in its measuring section, the requirements for installation position are relatively low and maintenance is relatively simple.

In summary, there are significant differences between turbine flowmeters and electromagnetic flowmeters in terms of measurement principles, scope of application, accuracy, characteristics, installation, and maintenance. Users should consider the specific application scenarios, fluid properties, accuracy, and cost requirements when making choices.