Alar turbine flowmeter parameters

Project Overview

Alar Turbine Flowmeter Parameters

Alar Turbine Flowmeter is a speed flow measurement instrument. Its principle is to use the impact torque of the fluid on the impeller to rotate the impeller. The speed of the impeller is related to the fluid's The flow rate is proportional to the flow rate. Turbine flowmeters have the advantages of high accuracy, wide range ratio, small pressure loss, and simple structure. They are used in petroleum, chemical, metallurgy, electric power, light industry, medicine and other industries to measure the flow of various liquid media.

When selecting and using an Alar turbine flowmeter, you need to understand its main parameters in order to select the appropriate instrument and ensure that it works in the best condition. The following are the main parameters of the Alar turbine flowmeter:

1. Basic parameters

1. Nominal diameter (DN): refers to the inner diameter of the connected piping system, indicating the size specifications of the flowmeter . Common nominal diameters include DN15, DN25, DN50, DN80, DN100, etc.

2. Fluid medium: refers to the type of fluid being measured, such as water, oil, gas, etc. Choosing a flow meter requires selecting the appropriate material and structure based on the actual medium.

3. Accuracy level: reflects the accuracy of the flow meter measurement value. Common accuracy levels include level 0.5, level 1.0, level 1.5, etc. The higher the accuracy level, the higher the measurement accuracy.

4. Range ratio (Qmax/Qmin): refers to the ratio of flow meter flow rate to small flow rate, which reflects the measurement range of the flow meter. The larger the turndown ratio, the wider the flowmeter.

5. Working pressure: refers to the pressure that the flow meter can withstand during normal operation. Common working pressure levels include 1.6MPa, 2.5MPa, 4.0MPa, etc.

2. Performance parameters

1. Flow range (m³/h): refers to the flow rate and small flow rate that the flow meter can measure. When selecting a flow meter, ensure that the measured flow rate is within the flow range of the flow meter.

2. Pressure loss (kPa): refers to the pressure drop caused by the fluid flowing through the flow meter. The smaller the pressure loss, the smaller the impact on the system and the better the energy saving effect.

3. Repeatability (%): refers to the degree of consistency of the indicated values ​​when the flowmeter measures the same quantity multiple times under the same working conditions. The higher the repeatability, the more stable the measurement results are.

4. Medium temperature (℃): refers to the temperature range of the fluid being measured. When selecting a flowmeter, ensure that the medium temperature is within the operating temperature range of the flowmeter.

5. Signal output: refers to the type of flow signal output by the flow meter. Common signal output methods include pulse output, current output, frequency output, etc.

3. Key points of selection

1. Determine the medium characteristics: including medium type, viscosity, temperature, pressure, corrosiveness, etc., and select a flow meter material and structure that is compatible with the medium.

2. Determine the flow range: According to the actual application scenario, select the appropriate turndown ratio and flow range to ensure that the flow meter can accurately measure.

3. Determine the accuracy level: Select the appropriate accuracy level according to the measurement accuracy requirements. The higher the accuracy level, the higher the price.

4. Consider the installation conditions: select the appropriate nominal diameter, connection method, installation direction, etc. to ensure that the flow meter can be easily installed and used.

5. Choose the right manufacturer: Choose a manufacturer with good reputation, reliable product quality, and provide complete after-sales service.

IV. Conclusion

The reasonable selection of Alar turbine flowmeter parameters is crucial to ensure measurement accuracy and improve system efficiency. In practical applications, the flowmeter model should be selected based on specific working conditions and needs, taking various parameters into consideration.

It should be noted that the above is only an introduction to some parameters of the Alar turbine flowmeter. For specific parameters, please refer to the product manual. It is recommended that you consult technical personnel during the selection and use process to ensure that you select the appropriate flow meter and get the best results.