Factors to consider when choosing a flow meter

Abstract: The information on the factors to be considered when choosing a flow meter is provided by the excellent flow meter and flow meter production and quotation manufacturers. To correctly and efficiently select flow measurement methods and meters, one must be familiar with both the meter and the characteristics of the flowmeter being used, as well as taking into account economic factors. To sum up, there are five factors, namely performance requirements, fluid characteristics, installation requirements, and environment. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the factors that need to be considered when choosing a flowmeter. To correctly and effectively select flow measurement methods and instruments, one must be familiar with the two aspects of the instrument and the characteristics of the flowmeter used, and at the same time consider economic factors. To sum up, there are five factors, namely performance requirements, fluid characteristics, installation requirements, environmental conditions and costs. 1. Consideration of performance requirements: After the measurement method is determined, the considerations for selecting the performance requirements of the instrument include: measuring flow (instantaneous flow) or total amount (cumulative flow), accuracy, repeatability, linearity, flow range and range. , pressure loss, output signal characteristics and response time, etc. 2. Consideration of fluid characteristics: After the initial selection of measurement methods and the initial determination of several proposed schemes according to the type of fluid, the detailed parameters and attributes of the physical properties of the fluid should be obtained from the process part, and the adaptability of the selected scheme should be further considered. In addition to the fluid category, the temperature, pressure, density, viscosity, lubricity, corrosiveness and abrasiveness of the fluid are usually considered according to the characteristics of the instrument type, and some applications also have hygienic requirements. Some measurement methods also consider specific parameters in the physical properties of the fluid, such as the use of electromagnetic flowmeters to understand the conductivity of the liquid. 3. Installation considerations: The measurement methods of different flowmeters have very different installation requirements. For example, some instruments (such as differential pressure type, turbine type) require a long upstream straight pipe section to ensure that the flow before the inlet end of the instrument is fully developed, while other instruments (such as volumetric type, float type) do not have this requirement or have very low requirements. . Some instrument manuals do not specify in detail that the instrument should consider the installation location and flow direction, maintenance space, installation direction and other requirements. However, many data show that the measurement performance of flow meters is greatly affected by the installation conditions. The reason for the large error in the application of the flow meter is not good, and a large part is caused by the poor installation. 4. Environmental Condition Considerations: The instrument's ambient conditions and expected changes should be considered in the selection process. These factors are: ambient temperature, humidity, safety and electrical interference. 5. Economic considerations: It is not comprehensive to only consider the purchase cost of the instrument in the economic aspect, and other costs should also be investigated, such as the purchase cost of accessories, installation and commissioning fees, maintenance and regular flow verification fees, operating fees and spare parts fees. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Factors to consider when choosing a flow meter'

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