ultrasonic water meter

超聲波水表Comprehensive analysis, integration of technical principles, core advantages, application scenarios, and selection points:
1、 Technical principles
Time difference measurement method
Calculate the flow velocity by detecting the time difference of ultrasonic propagation in the upstream/downstream direction, and convert it into flow rate based on the cross-sectional area of the pipeline.
Advantages: Non contact measurement (without mechanical moving parts), accuracy up to ± 1%, range ratio up to 100:1 (minimum measurement 1m3/h, maximum 100m3/h).
Anti interference design
The piezoelectric ceramic transducer ensures signal stability and is not affected by water impurities such as sediment and rust, with a protection level of IP68.
2、 Core advantages
Characteristic advantages performance
The minimum measurable drip flow rate for high-precision measurement is 0.001L/h, with an error of less than ± 1%, solving the problem of traditional water meters not measuring small flow rates.
Long life DN50 and below are guaranteed for 6 years (with the same lifespan as the battery), with a wear-resistant design and a 70% reduction in maintenance costs.
Low energy sleep current ≤ 20 μ A, supports battery power supply, suitable for environments without power supply.
Wide adaptability - able to operate stably from extreme cold to high temperature hot water at -30 ℃, resistant to dust and frost cracking.
3、 Application scenarios
Industrial monitoring
Real time monitoring of the cooling water circulation system, locating leakage points within 48 hours (such as saving 2 million yuan annually in chemical plants).
Civil household measurement
Smart Community: Bi directional metering technology eliminates water theft/pipeline backflow, and real-time push of water bills on WeChat.
Solitary care: Automatic alarm linkage community for abnormal water usage (such as sudden drops).
Agricultural water conservation
The drip irrigation system is linked with soil moisture sensors, reducing water consumption by 35% while still increasing yield (as in the case of cotton fields in Northwest China).
Underground pipeline network
Multi channel wired centralized control (such as patent CN223202425U) to avoid data loss caused by disconnection.
4、 Key indicators for selection
Function of parameter recommendation configuration
The range ratio is ≥ 100:1, covering the water consumption from dripping to peak.
Caliber adaptation for DN15-DN25 (household)/DN50+(industrial) matching flow requirements.
The communication protocol supports seamless integration of NB IoT/LoRa/4G with the smart water platform.
Protection level IP68 for long-term use in underground or humid environments.
5、 Precautions
Installation requirements: Avoid strong magnetic field interference, signal strength should be greater than -115dBm.
Life management: For DN25 and below, it is recommended to rotate for 6 years, and industrial meters need to be calibrated regularly.
Ultrasonic water meters have reshaped water resource management through technological innovations such as time difference measurement and design without moving parts, and have significant value in areas such as water conservation, consumption reduction, leakage reduction, and smart cities.