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1. What flow meter can measure the flow rate of incomplete pipes?
Electromagnetic flowmeter, ultrasonic flowmeter, and open channel flowmeter are common choices in the scenario of measuring the flow rate of the pipeline.
. 1. The electromagnetic flowmeter is designed based on the principle of electromagnetic induction, and calculates the flow rate by measuring the induced electromotive force generated by a conductive liquid in a magnetic field. Advantages: Strong adaptability to conductive liquids, unaffected by factors such as fluid density and temperature, and high measurement accuracy. Applicable scenarios: Non full tube measurement of conductive liquids such as sewage treatment, chemical acid and alkali media, etc.2. Ultrasonic flowmeter adopts the principle of time difference of ultrasonic co current/counter current propagation, and non-contact measurement of flow velocity. Advantages: Flexible installation, minimal pressure loss, suitable for irregular pipeline laying environments. Applicable scenarios: Large diameter water supply pipelines, circulating water systems, and other situations where fluid does not need to be cut off. 3. Open channel flow meters measure flow by linking liquid level height with channel geometric parameters and require a matching weir structure. Advantages: Suitable for rectangular/trapezoidal/circular open channels, with low maintenance costs. Applicable scenarios: open channel flow monitoring for agricultural irrigation, municipal drainage, etc.
2. How can an ultrasonic flowmeter be used when the flow rate is not sufficient in the pipe? Knowing these three points is enough!
Three solutions for using ultrasonic flow meters when the flow rate is n
First, changing the diameter of the pipeline. Solution: If the pipeline where the measurement was originally intended is thicker and the liquid inside the pipeline is often in a non full state, it can be considered to replace the pipeline with a smaller diameter pipeline. By reducing the diameter of the pipeline, the pressure of the liquid inside the pipeline can be increased, making it easier to reach the full pipe state. Then, install an external clamp type ultrasonic flowmeter on the transformed pipeline for flow measurement. Attention: When changing the diameter of the pipeline, it is necessary to ensure that the material, wall thickness, and other parameters of the new pipeline match the original pipeline to avoid adverse effects on fluid flow. At the same time, it is necessary to recalibrate the flow meter to ensure the accuracy of the measurement results.
2. Upstream booster pump solution: If conditions permit, a pipeline type booster pump can be installed upstream of the ultrasonic flowmeter.
. A booster pump can increase the flow rate and pressure of the liquid in the pipeline, enabling it to reach full capacity in a short period of time, thereby meeting the measurement requirements of ultrasonic flow meters. Attention: The selection of booster pump needs to be based on actual working conditions, including factors such as
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