Ultrasonic flow switch

     Ultrasonic flow switch is a device that uses ultrasonic technology to measure fluid flow. It transmits and receives ultrasonic signals, analyzes the propagation time or frequency changes of the signals in the fluid, and calculates the flow velocity and flow rate of the fluid. Ultrasonic flow switches typically have advantages such as no moving parts, easy installation, high precision, and good stability, making them suitable for the field of industrial automation control

Working principle
    The working principle of ultrasonic flow switch is based on the flow velocity information carried by ultrasonic waves when propagating in fluids. When ultrasound propagates in a fluid, its propagation speed is affected by the fluid flow velocity. By receiving ultrasonic signals, the flow velocity of the fluid can be detected and converted into flow rate. According to different detection methods, ultrasonic flow switches can be divided into various types, such as propagation velocity difference method, Doppler method, beam offset method, noise method, and correlation method

     Ultrasonic flow switches can be used in conjunction with various valves to monitor and control fluid flow. For example, it can be used in conjunction with ball valve, butterfly valve, gate valve, etc. to automatically adjust the opening and closing degree of valves according to changes in flow rate, thereby maintaining stable operation of the system. In the fire protection system, ultrasonic flow switches can be used in conjunction with fire specific valves to monitor and control the flow of fire water.

Matters needing attention
    The valve body of an ultrasonic flow switch may be made of materials such as PVC, PTFE, POM, brass, and stainless steel structure, which can be selected according to different application scenarios and medium requirements. At the same time, when selecting and using an ultrasonic flow switch, the characteristics of the fluid type, temperature, pressure, density, viscosity, corrosiveness, etc. need to be considered to ensure the accuracy and reliability of the instrument. At the same time, appropriate detection methods and installation methods should be selected based on specific application scenarios