Bacher flowmeter | Increase knowledge! Calculation principle and construction points of Bacher groove, with case studies attached

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1. The size of the Bacher trough open channel flowmeter is 460mm high, 774mm long, and 3214mm wide. The Bacher trough has a complicated shape and is more expensive than a weir. In order to improve accuracy, it is required to measure the accurate dimensions of each part of the trough. But there are also some advantages that other measuring devices cannot compare with: small water level loss (about one fourth of the weir), almost no sedimentation of solid substances in the water, small influence on flow velocity, and relatively small impact on the water level on the downstream side. Therefore, it is used to measure the flow rate of other liquids such as agricultural water and industrial water. Used in conjunction with an open channel flowmeter to convert the flow rate in the open channel into the level of the liquid. Measure the flow rate of water in an open channel. Such as Changyuzhao urban water supply diversion canal, cooling water diversion and drainage canal for thermal power plants, sewage treatment inflow and discharge canal, industrial and mining enterprise wastewater discharge, as well as water conservancy engineering and agricultural irrigation channels. Installation dimensions of commonly used models and specifications of open channel flow meters: (unit: m) Bacher tank parameter table (size table) Corresponding relationship of flow rate in Bacher tank open channel. The larger the flow rate in the open channel, the higher the liquid level; The smaller the flow rate, the lower the liquid level. For general canal demolition channels, there is no definite correspondence between liquid level and flow rate. Because the same water depth and flow rate are also related to the cross-sectional area, slope, and roughne
Bacher flowmeter
ss of the channel. The stainless steel Bacher groove is installed with a measuring weir groove in the channel. Due to the smaller cross-sectional area of the weir gap or groove contraction compared to the channel, the correspondence between the upstream water level and flow rate of the channel mainly depends on the geometric dimensions of the weir groove. The same measuring weir tank is placed on different channels, and the same liquid level corresponds to the same flow rate.

2. Size of Bacher trough open channel flowmeter

The size of Bacher trough open channel flowmeter varies depending on its model and flow range.

. The following are some common models of Bacher trough open channel flow meters with size information: * The standard Bacher trough has multiple specifications, such as a B-value of 25mm with dimensions of 835mm in length, 267mm in width, and 265mm in height, with a maximum hourly flow rate of 19.44m ³; The size with a B-value of 51mm is 773mm in length, 314mm in width, and 305mm in height, with a maximum hourly flow rate of 47.52m ³; Similarly, the larger the B value, the larger the size and flow range. *In addition to the standard Bacher groove, there are other customized sizes available to meet specific measurement needs. The dimensions of these customized Bacher troughs will be comprehensively considered based on factors such as actual channel size, wild water flow conditions, and measurement accuracy. The Bacher trough open channel flowmeter is a flow meter that uses ultrasonic measurement technology to measure the time it takes for sound waves to reflect back after coming into contact with the water surface of the channel, and then calculates the flow rate of the channel according to

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