The flow sensor referred to in this

The flow sensor referred to in this article is commonly referred to as a flow meter. It is capable of measuring fluid flow in pipes, including primary induction and secondary electrical signal processing. When the flow flows through the flow timing, a corresponding physical signal is generated, such as deformation displacement, vortex frequency, pressure, and so on. It is then converted into an electrical signal for post-processing. Finally, the corresponding flow is calculated by the processed signal according to the specific relational formula. In order to make further use of, layered water injection flow control. So far, flow has been measured in a variety of ways. Including differential pressure, speed, volume, electromagnetic and so on, according to the measurement principle of different division of 51. The accuracy of flow measurement directly determines the performance of layered water injection flow control and is the key-link in the automatic water injection flow measurement system.(1) Differential pressure flow meterThe application field of differential pressure flow meter can be said to be very extensive, the use of the most, at home and abroad are more popular. The essence of its measurement flow size is mainly determined by pressure difference, when the measured fluid passes through its obstruction, the pressure difference will exist at both ends of the obstruction. To determine the size of the fluid measured.(2) Rotor flow meterRotor flow meter because of its relatively accurate measurement of small flow, so in industrial production is more used to measure small flow, at the same time simple structure, measurement accuracy can meet the measurement requirements. But there will be card phenomenon, mainly because of the active parts inside. The essence of measuring the flow size is the throttle principle. When the testAs the volume fluid flows through, the pressure difference occurs before and after the rotor, at which point there is - an upward thrust acting on the rotor. The size of the thrust determines its position, and when the thrust is exactly equal to its gravity, the rotor reaches - a balanced position suspended in the measuring pipe. The size of the flow is determined according to the conditions to be achieved when the rotor is balanced and the relationship between reasoning and gravity.(3) Target flow meterBoth the target flow meter and the rotor flow meter are measured using the throttle principle, but the difference is that the suspended component as a throttle element is the target here. When the force of the fluid is acting positively on the target, the transmitter converts the force into an electrical signal through the connecting rod structure, thus realizing the measurement of the flow volume.(4) Vortex Street Flow MeterA vortex street flow meter is a fluid vibration flow meter. The size of the fluid flow is calculated mainly through frequency detection and according to the relationship between frequency and flow. And its frequency detection is very easy to be disturbed by the outside world, so, the use of vortex street flow meter at the same time, frequency detection is a must be considered, but also the focus of research. Once the signal is detected, some processing is usually performed. For example, filter out noise and amplify signals