Strive to reduce the pressure loss of the flow meter

When the fluid flows through the flow meter, there will be some irrecoverable pressure loss due to the moving parts and resistance parts in the meter; even if there is nothing in the meter, such as a Coriolis flow meter, there will be more pressure loss due to forced fluid flow direction change. Large pressure loss; electromagnetic and ultrasonic flowmeters will also have some pressure loss due to the resistance between the fluid and the pipe wall, but it is relatively small and can be ignored. Flow When the fluid flows through the flow meter, there will be some irreversible pressure loss due to the moving parts and resistance parts in the meter; even if there is nothing in the meter, such as Coriolis flowmeter, it will be forced to change the flow direction. Large pressure loss; electromagnetic and ultrasonic flowmeters will also have some pressure loss due to the resistance between the fluid and the pipe wall, but it is relatively small and can be ignored. The pressure loss produced by the flow meter causes the flow to slow down. In order to maintain the normal process flow, the power must be increased to make up for this loss. The annual operating cost required to increase the power is an expensive figure for some instruments, especially when the pipe diameter is large, and may be dozens of times the initial purchase cost. Energy saving and consumption reduction are attached great importance to all countries in the world, especially developed countries. Therefore, the pressure loss of flow meters has been included in the selection criteria of the orderer. Flow meters with excessive pressure loss, especially when the caliber is large, have basically been excluded by users; at the same time, the development of flow meters with low pressure loss has also been included in the manufacturer's issue.　　 With the development of modern industry, it is necessary to gradually improve the performance of flow meters; and technological progress has also made it possible to improve flow meters. The two complement each other and promote each other.　　The accuracy of the flow meter reflects its ability to approach the true value. It not only depends on the principle and manufacture of the instrument, but also must be determined by the calibration device in an ideal state. In actual use, the accuracy will often drop a lot because the ideal conditions are not met. The accuracy in the sample is only The highest possible value.