The flowmeter is simple in structure and easy to use

The most widely used transducers are clamp-on and plug-in. The monophonic ultrasonic flowmeter has a simple structure and is easy to use, but this kind of flowmeter has poor adaptability to changes in flow distribution. The rapid development of microelectronics technology and computer technology has greatly promoted the replacement of instruments, and new types of flowmeters have sprung up like mushrooms after rain. So far, it is said that hundreds of flowmeters have been put into the market, and many difficult problems in field use are expected to be solved. The work of modern flow measurement technology in our country is relatively late, and it is set at the upstream end of the measurement flow channel 6 and relative to the holes 11 and 12 to reduce the flow of the measured fluid into the holes 11 and 12; the measurement control part 19 is used to measure The propagation time of the ultrasonic waves between the ultrasonic transducers 8 and 9; and a calculation unit 20 for calculating the flow rate based on the signal of the measurement control unit 19.
The flowmeter should try to avoid ferromagnetic objects and equipment with strong electromagnetic fields (such as large motors, large transformers, etc.), so as to prevent the magnetic field from affecting the working magnetic field and flow signal of the sensor. Flow signal line and excitation line between sensor and converter. However, from the analysis of damaged components in lightning faults, most of the induced high voltage and surge current that cause the fault are introduced from the power line of the control room, and the other two paths are less. Since the electromagnetic flowmeter has more opportunities to measure suspended solids or dirt than other flowmeters, the probability of failure caused by the inner wall adhesion layer is relatively high. If the conductivity of the adhesion layer is similar to that of the liquid. Common commissioning failures are usually caused by improper installation.