Installation standard for ultrasonic flowmeter | Doppler ultrasonic flowmeter

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1. Precautions for Installation of Ultrasonic Flow Meter

When installing an ultrasonic flow meter, the following precautions should be taken to ensure measurement accuracy and stable operation of the equipment:

1. Choose the installation position of the display instrument to avoid interference sources: If the display instrument is installed indoors, it should be kept away from equipment that may cause electromagnetic interference, such as frequency conversion control cabinets, to prevent signal distortion or data fluctuations. Secondly, the pipeline conditions for sensor installation require good roundness and surface quality of the pipeline: the tested pipeline must have good roundness, smooth inner surface, and uniform pipe wall to avoid abnormal sound wave propagation caused by pipeline deformation or roughness. The material of the pipeline should be uniform, without local thickening or corrosion, to reduce the interference of sound wave reflection. Length requirement for straight pipe section: The upstream straight pipe section must meet 5D or above (D is the inner diameter of the pipeline) to ensure that the fluid forms a stable flow state before entering the sensor, eliminating the influence of vortices or turbulence. Downstream straight pipe section: It needs to meet the requirement of 3D or above, reduce the interference of fluid leaving the sensor, and ensure the uniformity of the flow field in the measurement section. Example: If the inner diameter of the pipeline is 100mm, the upstream straight pipe section must be ≥ 500mm and the downstream must be ≥ 300mm. The pipeline must be filled with liquid: the tested pipeline must be completely filled with liquid to avoid air or gas mixing that may ca

Installation standard for ultrasonic flowmeter

use changes in the sound wave propagation path, leading to measurement errors or signal interruptions. Before installation, it is necessary to check the exhaust condition of the pipeline and add an exhaust valve if necessary. 3. Requirements for installation space and location of sensors: Adequate operating space should be reserved in the installation area to facilitate the fixing, debugging, and later maintenance of sensors, avoiding difficulties in operation or poor contact caused by limited space. Taboo for horizontal pipeline installation: Avoid top and bottom: In horizontal pipelines, sensors should not be installed at the top (which may accumulate gas) or bottom (which may deposit impurities) of the pipeline to avoid affecting the normal propagation of sound waves. Avoid pipeline defects: Keep away from uneven areas, welds, or joints in the pipeline, which may cause abnormal sound wave reflection or fluid flow disorder. Recommended location: Select the middle area of the pipeline sidewall to ensure stable laminar flow of the fluid.

4. Other precautions Temperature and pressure adaptability: Select the appropriate type of sensor based on the fluid temperature and pressure to avoid material deformation or seal failure caused by excessive use.

. Special sensors and cooling or pressure reducing devices are required for high temperature or high pressure scenarios. Fluid characteristic matching: Confirm that the fluid type (such as clean water, sewage, chemical liquids, etc.) is compatible with the sensor material to prevent corrosion or chemical reaction damage to the equipment. For liquids containing particles or fibers, anti clogging sensors should be selected. Installation direction and angle: Strictly fix

Installation standard for ultrasonic flowmeter | Doppler ultrasonic flowmeter

1. Precautions for Installation of Ultrasonic Flow Meter

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