The VSAN Ultrasonic Clamp-on Flow Meter is a high-performance, non-invasive flow measurement solution designed to accurately measure the flow rate of clean liquids without interrupting the process or modifying the existing pipeline. Utilizing advanced Transit-Time Ultrasonic Technology, the flow meter measures the velocity of the liquid by transmitting ultrasonic signals between two externally mounted sensors clamped onto the outside surface of the pipe.
Unlike conventional inline flow meters, the Clamp-on Ultrasonic Flow Meter requires no pipe cutting, drilling, welding, or process shutdown, making installation simple, cost-effective, and completely non-intrusive. Since the sensors are mounted externally, they never come into contact with the process fluid, eliminating pressure loss, contamination, corrosion, and wear. This ensures long service life, virtually maintenance-free operation, and reliable performance in demanding industrial environments.
Manufactured using advanced digital signal processing technology and precision ultrasonic transducers, the VSAN Clamp-on Flow Meter delivers excellent accuracy, repeatability, and stability over a wide range of pipe sizes and flow conditions. It is suitable for both permanent installation and temporary flow measurement applications.
The transmitter features a large backlit LCD display capable of displaying instantaneous flow rate, totalized flow, flow velocity, signal strength, diagnostics, and alarm status. It supports multiple industrial communication protocols including 4–20 mA, Pulse Output, RS485 Modbus RTU, HART (optional), Data Logger, and Ethernet (optional), allowing seamless integration with PLC, DCS, SCADA, and Industrial IoT systems.
Available with IP65, IP67, or IP68 protection and suitable for pipe sizes ranging from DN15 to DN6000, the VSAN Ultrasonic Clamp-on Flow Meter is widely used across industries including Water & Wastewater, HVAC, Power Plants, Oil & Gas, Chemical Processing, Food & Beverage, Pharmaceutical Manufacturing, Marine, and Building Management Systems.
With its superior reliability, quick installation, low maintenance, and excellent measurement performance, the VSAN Ultrasonic Clamp-on Flow Meter is the ideal solution for industries seeking accurate flow measurement without disturbing existing process pipelines.
The VSAN Ultrasonic Clamp-on Flow Meter operates on the Transit-Time Ultrasonic Principle, where two ultrasonic sensors are mounted externally on opposite sides of the pipeline. These sensors alternately transmit and receive ultrasonic pulses through the flowing liquid.
When the liquid is stationary, the ultrasonic signals travel in both directions at the same speed. However, when the liquid flows, the ultrasonic pulse traveling in the direction of the flow reaches the receiving sensor faster than the pulse traveling against the flow. The transmitter continuously measures this tiny transit-time difference between the upstream and downstream signals.
Using advanced digital signal processing algorithms, the flow meter calculates the flow velocity from this time difference. By combining the measured velocity with the internal pipe diameter, the transmitter accurately determines the volumetric flow rate.
Since the sensors are mounted outside the pipe and never come into contact with the fluid, the measurement process is completely non-invasive. This eliminates pressure loss, leakage risks, contamination, and maintenance associated with traditional inline flow meters. The technology ensures stable and accurate performance while preserving the integrity of the pipeline.
The VSAN Ultrasonic Clamp-on Flow Meter is widely used for flow monitoring, process control, energy management, and utility measurement across various industries.
© 2026 VSAN GROUP. All Right Reserved.
Designed & Developed by 
Innov Touch Technologies Pvt Ltd.
Enquire Now