Ultrasonic flowmeter principle and classification
Ultrasonic flowmeters are non-contact meters that are suitable for measuring fluids that are not easily accessible or accessible and that are not easily observable, as well as large tube flow rates. It cooperates with ultrasonic gauges to measure open flow. The use of ultrasonic flowmeters does not require the installation of measuring elements in the fluid, so it does not change the flow state of the fluid and does not create additional resistance. The installation and overhaul of the instrument does not affect the operation of the production line and is thus an ideal energy-efficient flowmeter.
Ultrasonic flowmeter classification
Segment type
Some pipelines are due to poor material quality, poor sound conductivity, or serious rust, and gaps in the space between the lining and the pipeline, resulting in serious attenuation of ultrasonic signals, and the use of external ultrasonic flowmeters can not be measured normally, so a segment type ultrasonic flowmeter is produced. .
The segment-type ultrasonic flowmeter integrates the transducer and the measuring tube and solves a problem in the measurement of the external-mounted flowmeter. Moreover, the measurement accuracy is also higher than other ultrasonic flowmeters, but at the same time, it also sacrifices the advantages of continuous flow installation of external-mount ultrasonic flowmeters and requires that the pipelines be installed with transducers.
Plug-in
The plug-in ultrasonic flow meter is intermediate between the two. In the installation can be continuous flow, the use of special tools in the water pipe drilling, the transducer is inserted into the pipeline to complete the installation. Because the transducer is in the pipeline, its signal is transmitted and received only through the measured medium without passing through the pipe wall and the lining, so its measurement is not limited by the pipe quality and the pipe lining material.
Paste type
Externally attached ultrasonic flowmeter is the earliest production, the user is most familiar with the most widely used ultrasonic flowmeter, the installation of transducer without pipe cut-off, that is, paste it, it fully reflects the ultrasonic flowmeter is simple to install, easy to use features .
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