ultrasonic flow meter water flow meter working principle

sales01@cxflowmeter.com

The water flow meter ultrasonic flow meter utilizes the principle of low voltage and multi-pulse time difference, adopts high-precision and ultra-stable double-balanced signal differential transmission and differential reception digital detection technology to measure the acoustic wave transmission time in the upstream and downstream directions, and calculates the flow rate according to the time difference. Ultrasonic flowmeter has the characteristics of good stability, small zero drift, high measurement accuracy, wide range ratio and strong anti-interference.

 

 

Among them, the insertion type and the clip-on ultrasonic flowmeter are widely used in various industries for their advantages of convenient installation and high measurement accuracy.

 

Clamp-on Ultrasonic Flow Meter

 

The working principle of ultrasonic flowmeter: When the ultrasonic beam propagates in the liquid, the flow of the liquid will cause a small change in the propagation time, and the change in the propagation time is proportional to the flow rate of the liquid.

 

At zero flow, the two sensors take exactly the same amount of time to transmit and receive sound waves (the only technology that can actually measure zero flow). When the liquid is flowing, the acoustic wave transit time in the upstream direction is greater than that in the downstream direction.

 

Its relationship conforms to the following expression:

Among them: V medium velocity, θ is the angle between the sound beam and the liquid flow direction, M is the number of linear propagation of the sound beam in the liquid, D is the inner diameter of the pipe, Tup is the sound beam propagation time in the positive direction, Tdown is the sound beam in the The propagation time in the reverse direction, ΔT=Tup–Tdown, calculates the flow rate V through the above formula, and then calculates the flow rate through the pipeline data D we input to the transmitter.

 

The flow formula is: Q=πV Q Instantaneous flow π Pi ratio D Pipe inner diameter V Velocity velocity

 

If you want to know more parameters and quotation of ultrasonic flow meter, please contact winny: sales01@cxflowmeter.com