The metering work of the water system is more complicated. The pipe diameter of the whole pipe network has a wide coverage range. The large main pipe has more than DN2000mm, and the smallest one has DN25mm or the like. Fluid characteristics are also complex, such as domestic sewage, rainwater, factory waste water, corrosive, and a large number of bubbles. And there are also cases of non-full tubes in the entire pipe network.
How can we solve the measurement accuracy of multi-fluid and multi-working conditions?
According to people who have exchanged with the Jiangxi Institute of Metrology and Testing, the hospital has conducted on-site testing and testing of the flowmeters used in the three sewage treatment plants that have been built in Nanchang City, and found that the errors are large. According to the average 20% error calculation, the current 85 county-wide (city, district) sewage treatment plants and 15 sewage treatment plants in the province will have a fiscal settlement error of nearly 100 million yuan. In order to avoid the occurrence of such errors, it is more scientific and more realistic to reflect the water and drainage of each unit. The Changsha Municipal Water Affairs Bureau of Hunan Province selected the portable ultrasonic flowmeter as the “eye†of the flow meter based on the experience of the domestic metering and testing organization in the selection of the flowmeter.
After confirming the use of the ultrasonic flowmeter, according to the industry's application feedback on the imported ultrasonic flowmeter, and the supplier's service attitude, etc., the FLEXIM imported ultrasonic flowmeter represented by my subsidiary company was finally used as an alternate option. And invited the relevant technical personnel of our company to go to do technical exchanges. In the process of technical exchanges, the rigorous work attitude and scientific work concept of the relevant staff of the Water Affairs Bureau left a deep impression on the relevant personnel of the company, in solving the non-full pipe flow measurement, small flow measurement, how to improve the measurement accuracy. The parties have conducted extensive exchanges and achieved good results.
Tip: FLEXIM imported ultrasonic flowmeter, which is a combination of time difference and Doppler working principle, so that it can measure pure liquid or dirty liquid very well. At the same time, the calibration method of FLEXIM imported ultrasonic flowmeter is different from the calibration method of domestic or other flowmeters. The ultrasonic flowmeter is a calibration flow sensor and the relevant calibration information is built in the flow sensor. This way its linearity is guaranteed.
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