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Flow Rate Measurement
05 Aug, 2023

The Importance Of Measuring Flow Rate In Open Channels

Flow rate measurement is a crucial aspect of many industries, including water resource management, environmental engineering, and wastewater treatment. Accurate measurement of flow rate helps to optimise the design and operation of systems and equipment, monitor process performance, and ensure compliance with regulations. 

However, measuring flow rate in open channels can be challenging due to the complex nature of fluid flow. Also, the influence of external factors such as temperature and air velocity can make the task all the more difficult. 

In this blog post, we will discuss the importance of measuring flow rate in open channels and how Armfield’s Flow Over Weirs product can help achieve accurate measurements.

Why Is Measuring Flow Rate In Open Channels Important?

Open channels, such as rivers, canals, and drainage systems, are commonly used to transport water and other fluids. The flow rate of these channels determines their capacity and affects the efficiency and effectiveness of many processes and operations. 

For example, in wastewater treatment plants, the flow rate determines the volume of wastewater that needs to be treated. Alternatively, in irrigation systems, the flow rate determines the amount of water needed to irrigate crops. 

Inaccurate flow rate measurements can lead to under or over-sizing of equipment, incorrect dosing of chemicals, and inefficient use of resources. These could result in increased costs, decreased productivity, and environmental harm.

How Does Armfield Flow Over Weirs Product Help Achieve Accurate Flow Rate Measurements?

Armfield’s Flow Over Weirs product is a versatile and reliable tool used to measure the flow rate of liquids in open channels. The product comprises V-notch and rectangular weirs that accurately measures the flow rate. 

The weirs are designed to create a known head and flow rate familiarisation, which can be used to determine the flow rate of the liquid passing over the weir. This product is also loaded with several features that ensure accurate flow rate measurements. 

Firstly, the weirs are made of high-quality materials that are resistant to corrosion and wear, ensuring that the flow rate measurements remain accurate over time. Secondly, the product is easy to install and use, and the weirs can be quickly and easily interchanged, allowing for versatile and flexible measurement options.

Demonstration Capabilities Of Armfield’s Flow Over Weir

This tool is not just for observing the flow rates of open channels in different industries but also comes handy as a demonstration tool in the field of fluid mechanics. The key demonstration capabilities of it are -

  • To identify the properties of fluid flow in an open channel over a rectangular notch.
  • To investigate the attributes of fluid flow in an open channel over a triangular (vee) notch.
  • To establish the discharge coefficient values for both rectangular and triangular notches.

At BCL, we distribute this dynamic fluid mechanics tool from Armfield along with its other range. Its extensive range covers the entirety of the curriculum needs in Mechanical, Civil, Chemical Engineering, and Food Technology, covering topics like Hydrostatics and Fluid Properties, Fluid Dynamics, Free Surface Flow (Open Channel Flow), Flow Around Objects, Compressible Flow, and Rotodynamic Machinery.

If you are interested in learning more about this product or the related product range then feel free to get in touch with our experts at BCL.