Portable open channel flowmeter ultrasonic principle XY-6800R model manufacturer

Description :

Portable open channel flowmeter ultrasonic principle XY-6800R model manufacturer

Saturday is April 1st, 2023, with an additional shift and shipment. (The weather is nice and suitable for a spring outing. I feel like I'm missing out on such a beautiful spring outing.)

When I arrived at the company, I cleaned it up first. Next Monday, a new colleague, who is also a second born mother and a practical person, will come to the company. A little girl who came to the company a few days ago is not funny. She should be called a daughter-in-law after getting married. She is full of enthusiasm. I really like this kind of drive. She loves what she does and is serious about her work. It makes sense when she speaks. In the past, I used to beshoutOther people's sisters, now they call me sister, time flies like the wind, in the pastshoutWhen others were older sisters, I didn't think so. Now when others call me older sister, I look at timealreadyOld, cherish the present,Once upon a timeThe past is right in front of us. We used to work hard for others, but now we cheer for ourselves!

1Technical background and application

In order to implement the Environmental Protection Law and the Water Pollution Prevention and Control Law, protect the ecological environment, and safeguard human health, the Ministry of Ecology and Environment issued the "Technical Specifications for Installation of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)" and "Technical Specifications for Acceptance of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)" on December 24, 2019. In the "Installation Technical Specification", it is proposed that a flow monitoring unit is required in the composition of the online monitoring system. For the discharge units that need to measure the flow, standardized measuring weirs for open channels should be constructed

(Channel), and the construction of weir channels should be able to conduct comparison work of open channel flow meters. Triangular weirs, rectangular weirs, and Bacher channels are recommended. In the "Acceptance Technical Specification", specific requirements are proposed for the acceptance method of water pollution source flow monitoring units, which are divided into liquid level error comparison and flow error comparison, as follows:

(1) Liquid level error comparison: Use a portable open channel flow meter comparison device (liquid level measurement accuracy ≤ 0.1 mm) and an ultrasonic open channel flow meter to measure the liquid level value at the same water level observation section, conduct a comparison test, record the data pairs every 2 minutes for 6 consecutive times, calculate the error value Hi of each data pair, and select Hi as the liquid level comparison error of the flow meter.

(2) Flow Error Comparison: Use a portable open channel flow meter comparison device and an ultrasonic open channel flow meter to measure the instantaneous flow at the same water level observation section for comparison experiments. After the data is stable, start timing for 10 minutes. Read the cumulative flow F1 of the open channel flow comparison device and the cumulative flow F2 of the ultrasonic open channel flow meter during this period, and calculate the flow comparison error Δ F according to the formula.

According to the above requirements, it can be seen that portable open channel flow meters are needed for on-site acceptance. During the acceptance process, continuous statistics and recording of liquid level data and flow data are required. It is necessary to synchronously record 6 liquid level data each from the online open channel flow meter and portable sewage flow meter within 12 minutes, and 2 accumulated flow data each from the online open channel flow meter and portable sewage flow meter within 10 minutes. Moreover, because the sewage flow monitoring process is irreversible, once problems occur during the recording process, it is necessary to re compare and accept, which brings difficulties to the on-site acceptance work in terms of time and space.

In response to the current lack of portable sewage flow meters in China that can easily and quickly complete the above acceptance tasks, our company has developed a portable open channel flow meter that meets the on-site acceptance requirements for open channel flow meters based on years of experience in environmental monitoring instrument research and development, combined with the technical specifications for installation of online monitoring systems for water pollution sources (CODCr, NH3-N, etc.), the technical specifications for acceptance of online monitoring systems for water pollution sources (CODCr, NH3-N, etc.), and the technical requirements and testing methods for ultrasonic open channel sewage flow meters in HJ 15-2019. This portable open channel flow meter is mainly used for on-site technical parameter evaluation and acceptance of online open channel sewage flow meters, and can also be extended to flow measurement of open channel sewage discharge in enterprises.

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