Open Ultrasonic Flow Meter
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Hydrology & hydraulics
Open Ultrasonic Flow Meter
The ultrasonic time-difference flowmeter is suitable for metering of multi-section water conveyance structures, complying with JJG198-1994 verification regulation..
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Product Introduction


The device adopts the ultrasonic time-difference principle and is capable of measuring water flow for various water conveyance structures. It can measure the water flow of sections in different shapes, such as trapezoidal, rectangular, circular pipe, culvert, and irregular sections. The standards for the production and verification of this device comply with the national verification regulation Velocity-Type Flowmeters (JJG198-1994).



                                                                   






Technological Innovatio


Realizes refined measurement of cross-sectional velocity distribution by installing multiple groups of transducers in layers.

Strong adaptability: Resists interference from bubbles and suspended particles, and is less affected by environmental factors such as temperature.

Wide measuring range: Enables a high range ratio, covering flow rates from micro-flow to ultra-large flow.

Measuring scope: Can measure channels within 30 meters.


Structural Innovation


Independently designed transducer structure: Custom-molded dedicated transducer mounting brackets realize single-degree-of-freedom angle adjustment, simplifying the on-site calibration process.

Layered installation method: Covers the velocity distribution of the entire cross-section, improving the representativeness of measurement.


Comparison table



Serial No.

Sound Wave Frequency Range (KHz)

Channel Distance Range (m) - Normal Water

Channel Distance Range (m) - Sediment (1-2Kg/m³)

Channel Distance Range (m) - Sediment (3-15Kg/m³)
1

1000±20%

0-4m

0~1.0m


2

500±20%

0-20m

0~6.0m

0~1.5m

3

200±20%

20-300m

6~60m

1.5~20m

4

100±20%

300-1000m

60~200m

20~70m

5

30±20%

1000-3000m

200~500m

70~200m


Technical data

  • Posted on

    Parameter

  • Velocity measurement principle

    Ultrasonic time-difference method

  • Transducer operating frequency

    1MHz

  • Transducer arrangement

    Cross distribution

  • Flow velocity range

    0.05-8m/s

  • Number of channels

    4-32 channels

  • Accuracy class

    Class 2

  • Metering accuracy

    ±2%

  • Power supply voltage

    DC 9-24V

  • Communication

    RS485 Modbus protocol

  • Protection class of electronic chamber

    IP68

Materials

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