Different ultrasonic flowmeter selection points
Ultrasonic flowmeter has the advantages of easy installation and maintenance and low price. So in the large pipe measurement has an unusual position, but today’s flow meter manufacturer Aister instrument Xiaobian will say that the ultrasonic flow meter is not a separate product, according to different installation methods, there are several categories. In this paper, the selection points of each different ultrasonic flowmeter are introduced in detail.
1, portable ultrasonic flowmeter
It is suitable for temporary measurement, mainly used to check the operation status of other flow meters installed on the pipeline, carry out fluid balance test in an area, check the flow situation of the pipeline at that time, etc. If not fixed installation, the choice of portable ultrasonic flowmeter is convenient and economical.
2, time difference ultrasonic flowmeter
At present, the most widely produced and applied ultrasonic flowmeter is the time difference type. It is mainly used to measure clean fluid flow, and is widely used in the field of water supply companies and industrial water. In addition, it can also measure homogeneous fluids with low impurity content (impurity content less than 10g/L, particle size less than 1mm). Such as sewage and other media flow, accuracy up to ±1.5%. The practical application shows that the use of time difference ultrasonic flowmeter can achieve satisfactory results in the measurement of the corresponding fluid.
3, pipe segment ultrasonic flowmeter
The highest accuracy, up to ±0.5%, and is not limited by pipe material, lining, suitable for flow measurement accuracy requirements of high occasions. However, with the increase of pipe diameter, the cost will also increase, usually, the selection of small and medium-sized diameter pipe segment ultrasonic flowmeter is more economical.
4, fixed ultrasonic flowmeter
If there is enough installation space, the plug-in transducer is used instead of the external transducer, and the fixed ultrasonic flowmeter can completely eliminate the influence of pipe lining, scaling and pipe wall on the attenuation of ultrasonic signal, and the measurement stability is higher, and the maintenance workload is greatly reduced. Moreover, because plug-in transducers can be installed without interruption, their applications are becoming more and more widespread.
The function selection of ultrasonic flowmeter can be determined by the user according to the actual situation. If you are measuring bidirectional fluids, you must choose an ultrasonic flowmeter with positive and negative metering function. If the user needs to regularly understand the flow of the fluid in a certain period of time, you can choose an ultrasonic flowmeter with a printer.