Do you know the ultrasonic water meter? What is the verification procedure for ultrasonic water meters?
With the development of modern technology, the application range of ultrasound has become more and more extensive, not only in the field of water meters. Ultrasound can be used in many places, such as ultrasonic testing, ultrasonic cleaning, medical ultrasonic and so on. It can be seen that the application of ultrasound will be very extensive. Next, SH-METER will answer for you what is an ultrasonic water meter? What is the verification procedure for ultrasonic water meters?
What is an ultrasonic water meter?
The ultrasonic water meter is a new type of water meter that detects the time difference caused by the speed change when the ultrasonic sound beam propagates in the water upstream and downstream, analyzes and processes the water velocity, and further accumulates the water flow rate. It has excellent small flow detection capabilities, can solve many traditional water meter problems, is more suitable for water fee gradient charging, and is more suitable for saving and rational use of water resources. It has a broad market and application prospects.
Features of ultrasonic water meter
Low starting flow rate, wide range ratio, high measurement accuracy and stable work. There are no moving parts inside, no flow-blocking elements, and it is not affected by impurities in the water and has a long service life. The output communication function is complete, meeting all kinds of communication and wireless networking requirements. It has excellent small flow detection capabilities, can solve many traditional water meter problems, is more suitable for water fee gradient charging, and is more suitable for water resource saving and rational use, and has a broad market and application prospects.
Working principle of ultrasonic water meter
Its working principle is that there is discontinuous disturbance when water flows. This discontinuous disturbance can be suspended solid particles, bubbles, or small eddy currents. It is these "abnormal points" that become the ultrasonic reflection interface, which makes Ultrasonic waves produce frequency shift △f (Doppler effect), which is a linear function of flow velocity. By measuring the frequency shift △f, the flow velocity (or flow) in the pipeline can be measured.
Application field of ultrasonic water meter
1. Industrial process measurement and control.
2. Replace mechanical flowmeters to improve measurement reliability.
3. Replace all kinds of high-performance flow meters.
What is the verification procedure of ultrasonic water meter
1. Composition and status quo for ultrasonic water flow meter
The current valid version of the water meter verification regulations are JJGl62-1985 "Water Meter and Its Test Device", JJG258-1988 "Horizontal Screw Wing Water Meter", JJG585-1989 "High Pressure Water Meter" and JJG686-1990 "Hot Water Meter". Among the four regulations, JJGl62-1985 "Water meter and its test device" is representative, which is consistent with the 84 edition of the national water meter standard GB778-1984 "Nominal diameter 15-40mm rotary wing cold water meter", but due to the earlier drafting year For some reason, it has not been revised in time, and it has been inconsistent with other water meter technical documents in terms of terms, symbols and individual technical parameters. The national water meter standard was revised in 1996 by adopting the equivalent or equivalent international standards. The continuous emergence of new varieties of water meters with electronic devices has also increased the need for modification and supplementation of existing water meter technical regulations.
2. Change trend for ultrasonic water flow meter
Considering that the verification devices and methods of hot water meters are quite different from those of cold water meters, the verification procedures for hot water meters are still formulated separately. my country's new national water meter verification regulations adopt the international recommendation R49-1:2000(E) equivalently, and the revision work has been completed. According to the flow regulation system table formulated by the National Flow Capacity Measurement Technical Committee in 1998, the relevant requirements and verification methods of the "water meter test device" in JJGl62-1985 are expressed in JJGl64-2000 "liquid flow standard device". The new water meter The revision of the verification regulations will include the "water meter" part of JJG162-1985, JJG258-1988 "Horizontal Screw Wing Water Meter" and JJG585-1989 "High Pressure Water Meter". Considering that the verification devices and methods of hot water meters are quite different from those of cold water meters, the verification procedures for hot water meters are still formulated separately.
Ultrasonic water meter price
The price of an ultrasonic water meter is slightly higher. Compared with mechanical water meters, it has the characteristics of high accuracy, good reliability, wide range ratio, long service life, no moving parts, no need to set parameters, and installation at any angle.
The above points are the relevant information about ultrasonic water meters and ultrasonic water meter verification procedures summarized by SH-METER for everyone. If you want to know more product knowledge, please feel free to contact us.