Measurement method of sewage flow meter

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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.

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. Doppler ultrasonic non full pipe flowmeter: municipal drainage pipe network monitoring assistant.

1. Working principle: Doppler ultrasonic non full tube flowmeter achieves flow measurement through the

combination of Doppler effect and ultrasonic technology: Flow velocity measurement: The probe emits ultrasonic waves obliquely upwards, and bubbles or particle impurities in the fluid reflect the sound waves and produce a Doppler frequency shift Δ f, which is proportional to the flow velocity.

. The fluid velocity can be calculated by measuring Δ f. Flow calculation: Combined with the built-in pressure type water level gauge to obtain the liquid level height, the liquid flow rate is calculated using the velocity area method (flow rate=flow velocity x flow area).

2. Core Features: Non contact measurement sensors directly contact the fluid, but achieve interference free measurement through ultrasonic technology, avoiding the influence of sediment and debris on the equipment and extending its service life.

. Suitable for non full pipe flow scenarios, flow meters are commonly used for full pipe flow. This device can accurately measure the flow rate in non full pipe conditions and is suitable for common semi pipe flow or intermittent flow conditions in municipal drainage networks. High precision measurement capability, flow rate measurement range as low as a few centimeters per second, with an accuracy of within ± 2%. Adopting advanced signal processing algorithms to effectively filter out noise interference and improve data reliability. Convenient installation and low maintenance cost. The smart smile sensor is directly fixed to the outer wall of the pipeline, without the need for drilling or modifying the pipeline. The installation cycle is short and does not affect normal operation. Non contact design reduces equipment wear and reduces long-term maintenance requirements. The remote real-time monitoring functio

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