The Ultrasonic Clamp-on Flow Sensor: Non-Invasive, Precise Flow Measurement

Ultrasonic Clamp-on Flow Sensor exhibited at the Consumer Electronics Show (CES) in Las Vegas, USA.

Consumer Electronics Show (CES)
Dates: January 6–9, 2026
Location: Las Vegas, USA
Booth Number: North Hall 10529

Accurate flow measurement is critical across numerous industries, but traditional inline sensors often require process shutdowns for installation and maintenance. The Ultrasonic Clamp-on Flow Sensor presents an innovative solution by utilizing advanced ultrasonic technology for completely external, non-invasive measurement, offering unparalleled convenience and versatility.

Core Principle: The Time Difference Method
The sensor operates on the proven "Time Difference Method." A pair of high-precision ultrasonic transducers are mounted externally on the pipe wall at a specif

Key Features and Advantages
This external measurement approach translates into significant practical benefits:

External Fixed Installation & Non-Contact Measurement: Installation is quick and simple, requiring no pipe cutting, process interruption, or contamination risk. It is ideal for retrofit applications and hygienic or corrosive media.

Intelligent Screen Display & Real-Time Monitoring: A built-in display provides immediate, at-a-glance readings of flow rate, totalizer, and system status, enabling convenient onsite monitoring.

ic angle. These transducers work in tandem, alternately transmitting and receiving ultrasonic pulses that travel through the pipe wall and the flowing medium inside.
The fundamental principle leveraged is that the speed of sound within a moving fluid is affected by the flow velocity. The ultrasonic signal traveling downstream (with the flow) moves faster, while the signal traveling upstream (against the flow) moves slower. The sensor's sophisticated electronics precisely measure this nanosecond-level time difference between the two propagation paths. This measured time difference is directly proportional to the average flow velocity of the medium. By integrating this velocity with the known pipe's internal cross-sectional area, the system accurately calculates both instantaneous and cumulative volumetric flow rates.

Wide Fluid Compatibility: The technology is suitable for a broad range of homogeneous liquids, including water, ethanol, various chemical solutions, and others, as long as they can transmit ultrasonic waves.

Flexible Pipe Compatibility: It works effectively on both rigid pipes (e.g., metal, PVC) and soft pipe sections (e.g., rubber, plastic tubing), offering exceptional application flexibility.

 


Conclusion

The Ultrasonic Clamp-on Flow Sensor redefines ease of use in flow monitoring. By combining the accuracy of ultrasonic time-difference measurement with the clear advantage of non-invasive installation, it delivers a reliable, versatile, and cost-effective solution for continuous flow measurement in water management, chemical processing, HVAC, and countless other industrial and commercial settings.