Ultrasonic flowmeter is a meter that measures flow by detecting the effect of fluid flow on ultrasonic beams (or ultrasonic pulses).
According to the principle of signal detection, ultrasonic flowmeters can be divided into propagation velocity difference method (direct time difference method, time difference method, phase difference method and frequency difference method), beam shift method, Doppler method, cross correlation method, and spatial filtering method And noise law, etc.
Ultrasonic flowmeters are the same as electromagnetic flowmeters. Because there are no obstructions in the flow channel of the instrument, they are non-obstructive flowmeters. They are a type of flowmeter suitable for solving difficult flow measurement problems, especially in large-diameter flow measurement. It is one of the rapidly developing types of flow meters.
◆Unique signal digital processing technology makes the measurement signal of the instrument more stable, strong anti-interference ability and more accurate measurement.
◆Without mechanical transmission parts, it is not easy to be damaged, maintenance-free and long life.
◆ More optimized circuit, high integration; low power consumption and high reliability.
◆Intelligent standard signal output, friendly man-machine interface, multiple secondary signal output for your choice.
◆Pipe-section type small pipe diameter measurement is economical and convenient, and the measurement accuracy is high.
Piezoelectric transducers are commonly used in ultrasonic flowmeters. It uses the piezoelectric effect of piezoelectric materials, and uses a suitable transmitting circuit to add electrical energy to the piezoelectric element of the transmitting transducer to generate ultrasonic vibration. Ultrasonic waves are injected into the fluid at a certain angle to propagate, and then are received by the receiving transducer, and converted into electrical energy by piezoelectric elements for detection. The transmitting transducer uses the inverse piezoelectric effect of the piezoelectric element, while the receiving transducer uses the piezoelectric effect.
1 isolated RS485 output
1 channel 4-20MA (active, passive optional)
1 channel 4 isolation OCT (pulse width 6-1000ms)
1 relay output (pulse width 200ms)
Flow rate range
500MS (2 times per second)
2*10 backlit Chinese character display
4-key touch keyboard
High strength and good toughness
Aviation ABS material
Not affected by water, inorganic salts, alkalis and many acids. Durable
Ultrasonic heat meter
Equipped with temperature sensor,Temperature measurement possible