Doppler flowmeter manufacturer pipeline network cellar flow velocity monitoring

Description :

　　Doppler flowmeter manufacturer

　　Main characteristics of Doppler flowmeter manufacturers

　　● Contact Doppler ultrasonic velocity and flow measurement technology ● Velocity area method for flow measurement, allowing for free setting of cross-sectional water level

　　Excellent measurement accuracy and data stability relationship

　　● Wide flow velocity range: 0.02m/s to 5m/s. ● Fluid mechanics industrial design, with minimal impact on water body morphology, without

　　● Linear measurement, factory calibrated, long-term use without calibration affecting measurement accuracy

　　● Can measure the flow of artificial or natural channels, rivers, and pipelines ● IP68 waterproof casing, capable of long-term operation in harsh environments

　　● RS485 (Modbus), 4-20mA output ● Provides computer configuration and real-time data observation software

　　● No mechanical rotating parts, no mud blockage or water grass, debris

　　● Easy to connect with existing hydrological telemetry systems for issues such as entanglement of objects ● Easy to install, no need to fix cross-sections

　　● Exclusive flow calculation rules for open channels and closed pipelines

　　Doppler flowmeter manufacturer product introduction

　　The HR7600 Doppler flowmeter is based on Doppler ultrasonic velocity measurement, using DSP technology and advanced spectrum analysis algorithms, specializing in

　　Design for measuring water flow velocity and volume.

　　It does not have rotating parts such as propellers or bearings, and uses Doppler technology to detect flow velocity. It has no friction or inertia, and the measurement point is in front of the body

　　Disrupting the flow field, it has high measurement accuracy, wide range, sensitive induction, linear flow measurement, is not afraid of sediment and floating debris, intuitive reading, and simple operation

　　Convenient, not easily damaged, and other characteristics.

　　HR7600 Doppler flowmeter supports RS485 (Modbus), 4-20mA output, and can be customized according to customer requirements

　　Communication protocol. Advanced spectrum analysis algorithms can perform statistical analysis on the flow velocity of the water being measured, providing accurate data statistics of the measurement target,

　　For example, instantaneous flow rate, average flow rate, real-time water level, instantaneous flow rate, cumulative flow rate, etc. The casing of the Doppler flowmeter is made of PVC material

　　Quality, equipment protection level IP68, can easily cope with various harsh use environments.

　　The HR7600 Doppler flowmeter can be used to detect water in artificial or natural channels, rivers, hydropower stations, and urban underground pipelines

　　Position, flow rate, and flow monitoring. Simply fix the device at the bottom of the test section, and extremely high measurements can be obtained for both full and non full pipes

　　Accuracy.

　　Measurement principle of Doppler flowmeter (velocity area method)

　　The HR7600 Doppler ultrasonic flowmeter uses the velocity area method to measure flow, uses an ultrasonic flow velocity sensor to measure flow velocity V, and uses a pressure type flow meter

　　The water level gauge measures the water level H, and the channel parameters set in advance in the controller can be used by the controller to automatically convert the flow area S and the fluid

　　The flow formula is:

　　Q=V×S

　　Among them, V - flow velocity S - flow area Q - instantaneous flow rate

　　Due to the use of velocity area method for flow measurement, it can be applied to any shape of cross-section.

　　Principle of flow velocity measurement

　　HR7600 Doppler flowmeter manufacturer's flow velocity measurement is based on the Doppler effect. The probe emits a beam of ultrasonic waves obliquely upwards, and the ultrasonic waves

　　When propagating in a fluid, the fluid may contain impurities such as bubbles or particles (it can be assumed that the impurities in the fluid have the same velocity as the water flow)

　　When waves come into contact with impurities in the fluid, they cause a Doppler shift Δ f in the reflected ultrasonic waves, which is proportional to the flow velocity. By measuring multiple

　　The Doppler frequency shift Δ f can measure the flow velocity of the fluid.

　　After conducting experiments on a large number of water conservancy models, an advanced spectrum analysis algorithm has been developed, which can achieve flow velocity measurement accuracy of up to

　　Measure the flow velocity at 1% ± 1cm/s.

　　Detailed Specifications

　　Installation diagram of Doppler flowmeter

　　Selection of Doppler flowmeter controller

　　GPRS remote transmission version, local display version, portable version

　　The Doppler flowmeter probe can be paired with a telemetry terminal to form a GPRS remote transmission system, which is suitable for unmanned situations where data needs to be transmitted remotely; It can also be paired with a universal digital controller for local display or data output

　　PLC applications; It can also be paired with a handheld controller for situations that require portable flow rate and flow measurement. Monitoring of flow velocity in pipeline network cellar wells

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