The VSAN Sandwich Type Ultrasonic Water Meter is an advanced, high-precision water flow measuring instrument designed for accurate and reliable measurement of clean water in municipal, commercial, and industrial applications. Developed using Ultrasonic Transit-Time (Time Difference) Measurement Technology, the meter provides highly accurate volumetric flow measurement without any moving mechanical parts, ensuring long service life, maintenance-free operation, and exceptional measurement stability.
Designed with a compact sandwich (wafer) construction, the water meter is installed between two pipe flanges, making it an ideal solution where installation space is limited. The lightweight and compact design simplifies installation while maintaining excellent hydraulic performance with virtually no pressure loss.
The VSAN Sandwich Type Ultrasonic Water Meter features a large LCD display capable of showing 9-digit accumulated flow, 6-digit instantaneous flow rate, alarm indications, communication status, and battery condition for easy monitoring and operation.
The meter supports RS485 communication as standard and can be customized with 4G or NB-IoT wireless communication, enabling seamless integration with SCADA, AMR (Automatic Meter Reading), and smart water management systems. It also provides optional 4–20 mA analog output for industrial automation applications.
Manufactured in accordance with ISO 4064:2014 and GB/T 778-2018 standards, the VSAN Sandwich Type Ultrasonic Water Meter delivers outstanding accuracy, long-term reliability, and low power consumption. With a built-in lithium battery capable of operating for more than 10 years, it is an ideal choice for continuous water monitoring in modern water distribution systems.
The VSAN Sandwich Type Ultrasonic Water Meter operates on the Ultrasonic Transit-Time (Time Difference) Principle.
Two ultrasonic transducers are installed inside the flow meter body. These transducers alternately transmit and receive ultrasonic signals through the flowing water.
When water is stationary, the ultrasonic signals travel in both directions at the same speed. As water begins to flow, the ultrasonic pulse traveling in the direction of flow reaches the receiving transducer slightly faster than the pulse traveling against the flow.
The transmitter continuously measures this transit-time difference using advanced digital signal processing. The measured time difference is directly proportional to the flow velocity. By combining the measured velocity with the known internal cross-sectional area of the meter, the instrument accurately calculates the volumetric flow rate and totalized water consumption.
Since the measurement is completely ultrasonic and contains no moving parts, the meter provides stable performance, high accuracy, long service life, low maintenance, and reliable operation.
The VSAN Sandwich Type Ultrasonic Water Meter is widely used for accurate and reliable water consumption measurement across municipal, commercial, and industrial applications.
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