Box-type Ultrasonic Open Channel Flowmeter
1.Precision Manufacturing: The measuring box is made through precision machining, ensuring accurate internal size parameters for reliable measurements.
2.No On-site Calibration Required: The flowmeter is factory-calibrated, eliminating the need for on-site calibration, which simplifies installation and use.
3.Independence from Ditch Parameters: The accuracy of the flowmeter is not influenced by the parameters of the ditch or channel, ensuring consistent performance in varying conditions.
4.Time Difference Method: The flowmeter uses the time difference method to calculate the medium velocity by measuring the time difference between forward and reverse ultrasonic wave propagation in the fluid.
5.Velocity-Area Measurement: The flowmeter calculates the instantaneous and accumulated flow rates using the velocity-area method, combining data from ultrasonic transducers and the electronic water gauge.
Product introduction:
OBCS-XD-type box ultrasonic open channel flowmeter (“measuring box”) is developed by the company for measuring water level and flow in open ditches. The measuring box is made by precision machining with accurate internal size parameters. The whole measurement calculation process is not related with ditches parameters. It is calibrated in factory before ex-factory, making on-site calibration unnecessary. The accuracy is not related to ditch parameters.
According to the principle of time difference method, the measuring box calculates the medium velocity by measuring the time difference between forward flow and reverse flow of ultrasonic wave in the medium. The average flow rate of fluid can be measured by multiple pairs of ultrasonic transducers inside. The fluid area can be calculated by electronic water gauge and set box width, and the instantaneous flow rate and accumulated flow rate can be finally calculated by using the principle of velocity-area method.
Technical parameters:
Power supply | DC9-24V |
Site photos | Installation before sluice, retaining wall type installation, installation behind sluice through embedment |
Number of channels | 8 ~ 32 channels (depending on the box specifications). |
Measurement accuracy | Water level ±2.5mm and flow ±2%. |
Calibration mode | Calibrated before ex-factory based on actual flow. |
Communication mode | RS485 MODBUS protocol. |
Mechanical materials | Aluminum alloy. |
Measuring box materials | High strength 6061-T6 aluminum magnesium alloy. |
Box structure | Full mold technology of equipment accessories. |
Transducer fixation | Patented technology, i.e. transducer and fixed surface are on the same plane without protrusion, so as to avoid flow disturbance during flow measurement and make sampling more stable and reliable. |
Welding and fixing technology of inner bin | The inner bin is fixed by aluminum alloy welding technology, which makes the inner bin smoother and fixer. |
Signal amplification processing technology | Signal amplification technology can ensure accurate measurement when the transducer signal is weak. |
Flow metering | Velocity-area method. |
Velocity measurement | Ultrasonic time difference method. |
Covered area | The depth is measured by an electronic water gauge and then calculated according to the internal width parameter of the measuring box. |
Water level measurement | Three-level method consisting of water gauge + probe. |
Product structure:
Ring, bell mouth, transducer and water gauge
Application Scenario:
Company Strength:
The company was founded in March 2014, specializing in intelligent metrology products and information measurement and control technology research and development, production, sales and service, as well as the development and operation of “industry information management system”.
The company has advanced product development and testing equipment, testing equipment, large-scale modern production equipment, the company's annual production capacity of more than 200,000 pieces of finished products, semi-finished products and so on. The company has a first-class technology research and development team, more than 30 R & D practitioners, are engaged in water conservancy measurement and control and flow measurement industry for many years, with a wealth of experience in the industry. At the same time, the company attaches great importance to and constantly strengthen the cooperation with the relevant specialties of universities, relying on Shandong University, Shandong Agricultural University and other professional colleges and universities with scientific research and theoretical strength for the company to research and develop high-tech, high market applicability of products to provide a back-up guarantee.
