Calculation formula for triangular weir flow | Working principle of measuring weir meter

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1. A picture and text to introduce you to water flow measuring instruments: water weir meter

A picture and text to introduce you to water flow measuring instruments: water weir meter 1 Introduction Principle: A water flow meter is an instrument used to measure water flow, typically in rivers or canals. The principle is to use the water level changes formed when water flows through a specific shaped dam to calculate the water flow rate. The specific process is as follows: the water meter is fixed in the river or canal, and the water level changes when the water flows through the dam. The equipment records the water level changes and time, and calculates the water flow rate by processing these data. The water measuring weir meter has important application value in water resource management, environmental monitoring, water conservancy engineering design and other fields. It can provide accurate and reliable data for engineering design and water resource management. 2. Functional characteristics: Main functions: linear measurement, absolute position output, non-contact continuous measurement, never worn out, sensor does not need calibration and regular maintenance, output signal has multiple options (RS485

5, voltage, current), easy and convenient installation. Applicable scenarios: Suitable for long-term measurement of water level in rivers, lakes, reservoirs, dam bodies and other weirs, it is an effective monitoring device for monitoring changes in water level and flow rate. Sensor advantages: The water measuring weir uses a magnetostrictive level gauge as the sensor for measurement, which has the advantages of high resolution, good stability, reliable performance, fast response speed, and long working lif

Calculation formula for triangular weir flow

e. 3. Composition and schematic diagram. The water measuring weir generally consists of an anti fouling tube, an upper end cover, a magnetostrictive level sensor, a horizontal bubble, an observation cable, etc. 4. Flow calculation. The weir in the water measuring weir is usually a special shaped structure, and the shape of the weir will affect the flow of water and form a specific water level height. The water flow rate can be calculated by measuring the water level height. The following are the flow calculation formulas for different shapes of dams: the flow calculation formula for right angled triangular dams is $Q=1.4 × h ^ {5/2} $, where $Q $is the flow rate, measured in $m ^ 3/s $; $h $is the head above the weir, measured in $m. The formula for calculating the flow rate of a rectangular weir is $Q=m × b × sqrt {2g} × h ^ {3/2} $m=(0.402+0.054 × (h/p)) $where $Q $is the flow rate, measured in $m ^ 3/s $; $b $is the width of the weir, measured in $m $; $h $is the head above the weir, measured in $m $; $p $is the distance from the top of the weir to the top, measured in $m. The trapezoidal flow calculation formula is $Q=1.86bh ^ {3/2} $, where $Q $is the flow rate, measured in $m ^ 3/s $; $b $is the width of the weir bottom, measured in $m $; $h $is the head of water above the weir, measured in $m $

5. Precautions for installation and handling: Do not bend the measuring rod during installation and handling, and do not let the electronic compartment and measuring rod of the sensor withstand large impacts to avoid damaging the instrument. Operation of disrupting the stop ring: Remember its position on the measuring rod when removing the stop ring, so that it can return to its original position when resetting, ensur

Calculation formula for triangular weir flow | Working principle of measuring weir meter

1. A picture and text to introduce you to water flow measuring instruments: water weir meter

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