With the rapid development of Internet of Things technology, the demand for high-performance ultrasonic sensors for ultrasonic smart water meters used in smart buildings is becoming more and more obvious. – US0078.
Compared with similar products on the market, this product has more stable electrical performance and stronger pressure resistance, high sensitivity, fast peak value, and easier signal processing, which helps to improve the measurement accuracy of ultrasonic water meters, and is an intelligent ultrasonic water meter. Iterative upgrade of water meters provides a more competitive hardware foundation.
Figure 1) Audiwei water meter flow sensor US0078
The high performance of Audiwei water flow sensor is mainly reflected in:
01-Fast peak value, high sensitivity, easy signal processing
As can be seen from the comparative analysis of the echoes of Audiwei US0078 and similar sensors in Figure 2, the Audiwei water meter flow sensor only needs 8 waves to reach the peak value to complete the start-up. Compared with other products whose 12 waves reach the peak value, there are 4 less echo signals. time, shorter time and higher sensitivity.
Figure 2) Comparative analysis of echoes of Audiwei US0078 (left) and similar sensors (right)
From the waveform point of view, the difference between the peaks of the echo received by Audiwei US0078 is obvious, the difference between adjacent signal waves is larger than that of similar sensors, and it is easy to distinguish the first, second, third or more recovered signal waves. Reducing the difficulty of signal processing at the perception level is conducive to simplifying the algorithm of water meter measurement, and laying a core hardware foundation for water meter R&D and manufacturing enterprises to reduce costs and increase efficiency.
02-Electrical performance is more stable with zero flow drift value at high and low temperature
Table 1 is a comparison of the zero flow drift value of the electrical performance of Audiwei US0078 and similar sensors in low temperature and high temperature environments. In the case of zero flow, the receiving amplitude of Audiwei US0078 is 432mV in the low temperature environment of 10℃; in the high temperature environment of 60℃, the receiving amplitude is 369mV, and the amplitude change ratio is 14.64%. The value change ratios are 19.32% and 24.66% respectively, and the amplitude change is significantly lower than that of similar products in the market, indicating that its electrical performance is highly stable at high and low temperature with zero flow drift value, which is higher than the industry level.
Table 1) Comparison of the zero flow drift value of the electrical performance of Audiwei US0078 and similar sensors in low temperature and high temperature environments
03-The maximum pressure resistance can reach 4.8MPa, and the reliability is strong
A static water pressure test was carried out on the Audiwei water meter flow sensor US0078. The test condition was to maintain a water pressure of 4.8Mpa for 15 minutes. By comparing the test parameters before and after the test, it was found that the product performance has always remained stable and met the specification requirements. In addition, Audiwei US0078 can work continuously in the environment of 2.5MPa for a long time, meeting the needs of buildings with long water usage time, high water pressure during peak periods, and high pressure requirements.
Table 2) Audiwei water meter flow sensor US0078 performance parameters
04-Small size, in line with drinking water standards of various countries
From the performance parameters of Audiwei water meter flow sensor US0078 in Table 2, it can be seen that the resonant frequency of the product is 2110±30KHz, which can meet the requirements of high-range ratio water meters; the working temperature range is large, the temperature resistance is up to 90 °C, and it can effectively withstand high and low temperature environments. in regions of different latitudes. At the same time, the products are made of materials that pass the drinking water standards of various countries, such as WRAS, ACS, KTW, etc., which are safe and hygienic. In addition, the products must be tested one by one before they leave the factory to ensure that all performance parameters are within the specified range and have good consistency. Therefore, the products can be used in pairs without pairing tests before assembly, which effectively simplifies the assembly process of smart water meters. , to improve the operational efficiency of water meter manufacturers.
Figure 3) Audiwei water meter flow sensor US0078 size specification
Figure 3 shows the external dimensions of Audiwei water meter flow sensor US0078, the installation diameter is 10mm, the accuracy error is ±0.2mm, the volume is small, and the machining accuracy is high, which can effectively reduce the installation error.
In general, the Audiwei water meter flow sensor US0078 has high sensitivity, reaches the peak value quickly, and the electrical performance is highly stable and consistent with zero flow drift value at high and low temperature. The product is small in size, high in appearance and dimensional accuracy, reduces installation errors, and has the characteristics of high and low temperature resistance, high humidity resistance, high pressure resistance, etc. It is used in smart water meters in the fields of home, building, urban construction and so on.
Expansion: Audiwei water meter flow sensor other products