HJ-UD-A series Ultrasonic Doppler Velocity and Flow Meter
The HJ-UD Series Ultrasonic Doppler Flow Velocity and Discharge Meter, independently designed by Shenzhen Huaju Scientific Instrument Co., Ltd., is a high-performance flow measurement device. Based on the ultrasonic Doppler effect, the instrument measures flow velocity within a specific fluid region by transmitting and receiving ultrasonic signals. Combined with water level data from a pressure gauge, it calculates the cross-sectional area of the fluid and subsequently determines flow discharge using velocity and area measurements. The HJ-UD Series can be installed permanently or used portably, delivering precise flow measurements in scenarios with stable cross-sectional velocity distribution. Compact, easy to install, and user-friendly, it embodies a "small yet powerful" measurement solution.
Product Features
Proprietary Core Technologies: Independently developed low-noise transmitting/receiving circuits, high-precision Doppler algorithms, and hardware-level automatic orientation compensation technology.
2.High Accuracy: Proprietary technologies ensure precision in velocity and water level measurements. A built-in temperature sensor monitors water temperature in real time, while hardware-level orientation compensation enhances adaptability and accuracy across diverse conditions.
3.Durability and Reliability: Streamlined housing minimizes hydrodynamic resistance and reduces debris accumulation. Corrosion-resistant materials ensure long-term durability.
4.Flexible Measurement Modes: Supports intermittent and continuous measurement modes to meet varying monitoring needs and capture every velocity fluctuation.
Compliance Standards
The HJ-UD Series Ultrasonic Doppler Flow Velocity and Discharge Meter is designed and manufactured in strict compliance with national standards to guarantee quality and performance:
Certified under GB/T 11826.2-2012 (Current and Flow Measurement Instruments).
Certified under GB/T 11828.2-2005 (Water Level Measurement Devices).
Certified under GB/T 9359-2016 (Environmental Testing Methods for Hydrological Instruments).
Main Technical Parameters
| - Flow Rate Range：±0.02-±5m/s | - Water Level Resolution：1mm |
| - Flow Rate Accuracy：±0.6% FS，±2mm/s | - Minimum Detectable Water Level：2.5cm |
| - Flow Rate Resolution：1mm/s | - Temperature Detection Range：-20~80℃ |
| - Transducer Frequency：2MHz | - Power Supply Voltage：7-32VDC，40mA@12V（Scan once per minute ） |
| - Water Level Range：0-10m | - Data Interface：RS485，MODBUS Protocol |
| - Water Level Accuracy：±1% FS | - Dimensions：159mm *76mm *29mm |
Applications
Open channels
Hydraulic engineering
Urban drainage networks
To learn more about the HJ-UD Series Ultrasonic Doppler Flow Velocity and Discharge Meter or discuss its application in your projects, please contact us.
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