Ultrasonic flow meters often use time difference method and Doppler method. Using the principle that the time difference between the forward and backward propagation of sound waves in a fluid is proportional to the fluid velocity to measure fluid flow rate.
Working principle
Ultrasonic flowmeter is a device that calculates fluid flow velocity by measuring the time it takes for ultrasonic waves to pass through a fluid and generate ultrasonic pulses. Usually expressed in meters per second (m/s); The propagation speed may also vary depending on the fluid.
The workflow is as follows
(1) The ultrasonic transmitter emits pulse waves, which propagate in the fluid;
(2) Ultrasonic receiver, which receives ultrasonic signals reflected back from the fluid. And convert these signals into electrical signals and transmit them to the signal processing module.
(3) Measuring propagation time, measuring the time difference from transmission to reception, usually in microseconds or nanoseconds.
(4) Calculate flow velocity, flow velocity=distance/time difference. Distance is the known length of the fluid pipeline.
(5) Calculate flow rate, flow rate=velocity * pipe cross-sectional area.
Product Features
1. Adopting the principle of ultrasonic time difference, the measurement accuracy is high, reaching up to 99%; And with long-term use, there will be no attenuation;
2. Strong anti-interference energy, stable and reliable operation; The device has multiple communication interfaces; Convenient for users to connect.
3. Flexible installation, sensors can be installed in various ways such as pipe section, insertion, and external clamping.
4. Wide measurement range: water treatment, petrochemicals, pharmaceuticals, heating systems, cooling systems, etc.
The Ogryan ultrasonic flowmeter consists of an accumulator or control cabinet and a flow sensor installed on the pipeline; There are generally various types of ultrasonic flow meters, such as portable, pipe section, and external clamp.Integral meters are usually hung on walls or installed on brackets.
