Installation method of Doppler flowmeter| analog dissolved oxygen sensor

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1. Xiangfeng Technology FV-LSX-1 Portable Doppler Ultrasonic Flow Meter

Xiangfeng Technology FV-LSX-1 Portable Doppler Ultrasonic Flow Meter is a device that uses the Doppler effect to measure fluid flow velocity and flow rate. It is suitable for open channels, rivers, pipelines and other scenarios, especially for measuring liquids with high impurity content. The following is an introduction to the working principle, product characteristics, installation method, and application field of the type: Working principle Doppler effect basis: Ultrasonic transmitter is a fixed sound source, and solid particles in the fluid act as "observers" to reflect sound waves. The frequency difference (Doppler shift) between the emitted and received sound waves is proportional to the fluid flow velocity, and the flow velocity can be calculated by measuring the frequency difference. The formula is: fd=(2f/c) × v × cos θ, where fd is the received frequency difference, f is the transmitted frequency, c is the ultrasonic velocity, and θ is the angle between the water flow and the incident wave. Flow calculation: Combining the water depth data measured by the built-in pressure type water level gauge, the liquid flow rate is calculated using the velocity area method (flow velocity x flow area). Multi sensor collaboration: pressure type water level gauge: measures the overall water depth and evaluates whether the equipment is blocked by silt (data is valid when the difference with the ultrasonic water level gauge is within a reasonable range). Ultrasonic water level gauge: accurately measure specific water depth. Water temperature sensor: compensates for the influence of water temperature on sound velocity and improves measurement accur

Installation method of Doppler flowmeter

acy. Control host: integrates data processing and display functions, supports instantaneous flow and cumulative flow calculation. Product features: high integration of functions: simultaneous measurement of average flow velocity, water depth, and water temperature, without the need for additional rulers to determine the direction of water flow in real time. Using the velocity area method for flow measurement, there is no head loss and no need to construct standard weirs. Superior measurement performance: Based on the principle of ultrasonic Doppler, it has high accuracy and low initial velocity, suitable for liquids with high impurity content such as urban sewage and sludge. Using frequency domain Doppler analysis algorithm, the data is stable, reliable, and has strong real-time performance. Strong practicality in design: The fluid curved shell reduces water resistance and is less prone to water accumulation or fouling. The measuring rod adopts three 304 stainless steel pipes with a diameter of 15mm and a length of 1 meter, which can be spliced to meet different depth requirements. Equipped with a rechargeable lithium battery, it can work continuously for more than 24 hours on a single full charge. Data management and expansion: The handheld device is paired with upper computer software, supporting data export and integration of turbidity meters, pressure water level meters, and other Li guess devices. Installation method: Channel selection: Pipeline measurement: Select a single channel. Natural lakes: Multiple channels are selected to improve measurement accuracy. Sensor layout: The Doppler flowmeter probe, ultrasonic level gauge, and pressure type water level gauge should be installed vertically in the fluid to ensure

Installation method of Doppler flowmeter

1. Xiangfeng Technology FV-LSX-1 Portable Doppler Ultrasonic Flow Meter

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