The Clamp on Flow Meter is a convenient and non - intrusive flow measurement device. It is installed by simply clamping it onto the outside of a pipeline without the need to cut into the pipe or disrupt the flow. These meters usually use ultrasonic technology. They send ultrasonic signals through the pipe wall and into the fluid. By analyzing the time it takes for the signals to travel through the fluid and back, the flow rate can be calculated. Clamp on water flow meters are easy to install and remove, which is particularly useful for temporary or short - term flow measurement projects. They are also cost - effective as they eliminate the need for expensive pipe modifications. They are suitable for applications where access to the pipeline is limited or where a quick, non - invasive flow measurement is required, such as in building services, small - scale industrial plants, and for field testing in various industries.