Acoustic Doppler current profiler ADCP

Description :

　　1、 Product Introduction

　　Acoustic Doppler current profiler ADCP Doppler current meter is a high-precision and wide range Doppler ultrasonic flow velocity flowmeter independently developed by our company. The entire device is based on the "Doppler effect" and does not have rotating parts such as propellers or bearings. It uses ultrasonic technology to detect flow velocity, without friction or inertia. The measurement point is in front of the body and does not damage the flow field. It has high measurement accuracy, wide range, sensitive induction, linear flow measurement, is not afraid of sediment and floating debris, intuitive readings, easy operation, and is not easily damaged. The product complies with the SL/T 186-1997 standard. Suitable for environments that require continuous measurement of flow rate and flux, it has significant advantages such as easy installation and maintenance, high reliability, and high accuracy.

　　The main features of acoustic Doppler current profiler ADCP are:

　　Wide range: 0.02-5m/s (flow velocity)

　　The resolution can reach 1mm/s (flow velocity)

　　High response time, breaking the previous practice of requiring a long time to obtain flow rate and flow rate, with measurement results constantly refreshed.

　　The velocity area method for flow measurement is suitable for both full and non full pipes, and can freely set the cross-sectional water level relationship.

　　The internal high-precision temperature sensor can be used for water temperature measurement and sound speed compensation.

　　The fluid dynamics shell design has minimal impact on the flow state of the water body and does not affect measurement accuracy.

　　Anti corrosion shell design, capable of long-term operation in harsh environments.

　　● Can provide instantaneous flow values and cumulative flow values.

　　There are no mechanical rotating parts, and there are no problems such as sediment blockage or entanglement with water plants or debris. It is suitable for measuring in rivers with high suspended sediment content and floating objects such as water plants.

　　Measuring linearity, it has been calibrated at the factory and does not require calibration even after long-term use.

　　Equipped with data receiving software, it can read real-time and cumulative data.

　　2、 Working principle of acoustic Doppler current profiler ADCP

　　The acoustic Doppler current profiler ADCP product includes the following sensors: flow velocity sensor, pressure type water level gauge sensor, water temperature sensor

　　Flow velocity sensors are used to measure the speed of water flow. Pressure type water level gauges are used to measure water depth, while water temperature sensors are used to measure water temperature and compensate for sound velocity.

　　By measuring the flow velocity, water level, and cross-sectional dimensions, the cross-sectional flow rate can be determined.

　　In the ultrasonic Doppler flow measurement method, the ultrasonic transmitter is a fixed sound source, and the solid particles moving together with the fluid act as the "observer" with relative motion to the sound source. Of course, it only reflects the ultrasonic waves incident on the solid particles back to the receiver. The frequency difference between the emitted sound waves and the received sound waves is the Doppler frequency shift caused by the movement of solid particles in the fluid. Since this frequency difference is proportional to the fluid flow velocity, measuring the frequency difference can obtain the flow velocity and thus obtain the fluid flow rate. Therefore, it is suitable for measuring dirty water and slurry with high impurity content, such as urban sewage, sludge, etc.

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