External clamp type ultrasonic flowmeterIt is a non-invasive flow measurement instrument that measures flow by sandwiching an ultrasonic sensor outside the pipeline and utilizing the propagation characteristics of ultrasonic signals. It has advantages such as non-contact measurement, easy installation, and strong adaptability. However, it also has shortcomings such as measurement accuracy being affected by external conditions and limited high-temperature measurement.

　　External clamp type ultrasonic flowmeterThe main method for measuring fluid flow velocity is to use the difference in ultrasonic propagation time, and there are two main principles:

Time difference method: Ultrasonic signals propagate along the direction of fluid flow in the pipeline, and the flow velocity of the fluid affects the propagation time of ultrasonic waves. When fluid flows, the propagation time of ultrasonic waves along the flow direction is shorter, while the propagation time in the counter flow direction is longer. By measuring the time difference between two propagation events, the flow velocity can be calculated and the flow rate can be further determined.

Doppler effect method: When the fluid contains irregular substances such as bubbles or particles, the ultrasonic signal will be reflected by these substances, and the frequency of the reflected signal will change. By measuring the change in frequency, the flow velocity of the fluid can be calculated.

Core features:

Non contact measurement: The sensor is installed outside the pipeline and does not directly contact the measured medium, avoiding the fluid contamination problem that traditional flow meters may have, while not affecting fluid flow.

Easy installation: No need to drill or damage the pipeline, the probe can directly contact the straight pipe section without pressure loss, and flow measurement can be carried out on the already installed pipeline.

Adaptable

Wide range of pipe diameters: probes of different sizes can detect pipes of different diameters. With accuracy ensured, the minimum measurement can be for pipes with a diameter of DN15, and the maximum measurement can be for pipes with a diameter of DN3000 or more.

Good material compatibility: Suitable for measuring pipes made of different materials, such as metal pipes (stainless steel, carbon steel, cast iron, etc.), plastic pipes, etc., as well as some pipes made of sound transmitting materials.

There are various types of fluids: measuring liquids is relatively wide, including water, seawater, slurry or oil, acid-base and other homogeneous liquids.

Rich functions: In addition to basic flow measurement, it also has heat measurement function, data recording and analysis function, and can configure communication interfaces according to needs.