Measuring municipal wastewater high flow meter selection, need to pay attention to what?

Project Overview

　　Here are some key considerations: caliber and range selection:

　　Caliber: Usually the same caliber as the piping system is selected. If the piping system is to be designed, the caliber can be selected according to the flow range and flow rate.

　　Range: Select the appropriate range based on the expected maximum flow value and the normal flow rate. Ensure that the full range of the meter is greater than the expected maximum flow value and the normal flow rate is greater than 50% of the full range of the meter to ensure measurement accuracy.

　　Temperature and pressure: Temperature: Consider the operating temperature range of the flowmeter to ensure that the temperature of the measured medium is within this range. Special cases, such as the need for special treatment, should be selected to match the media temperature flowmeter.

　　Pressure: Ensure that the use pressure is lower than the working pressure specified by the flowmeter. Select the appropriate working pressure specification according to the pipe caliber and working scenario.

　　Medium properties: corrosivity: according to the corrosivity of the measured medium to select the appropriate electrode and lining materials, in order to avoid damage to the instrument due to corrosion.

　　Solid particles: If there are solid particles in the liquid, you need to select a flow meter that can withstand abrasion and consider reducing the flow rate to minimize wear.

　　Viscosity and Density: Ensure that the flow meter can adapt to the viscosity and density range of the measured medium.

　　Installation conditions: Installation location: the flowmeter should be installed in a place where it is easy to maintain and repair, and where the activities are convenient, and avoid installing it near ferromagnetic objects or strong electromagnetic fields to minimize magnetic field interference.

　　Piping Requirements: Ensure that there is sufficient straight pipe length before and after the flow meter to improve measurement accuracy.

　　Flowmeter type: For high flow sewage measurement, electromagnetic flowmeter and ultrasonic flowmeter can be considered. Among them, the electromagnetic flowmeter measurement is stable and applicable to a wide range, while the ultrasonic flowmeter has lower cost and high measurement accuracy. According to the actual demand and pipeline caliber, choose the appropriate type of flowmeter (such as one body type or separate type) and installation mode (such as insertion type or pipe section type).

　　After-sales service: choose manufacturers with good after-sales service to ensure that you can get timely technical support and maintenance services in the process of use.

　　Cost-effectiveness: Under the premise of meeting the measurement accuracy and reliability, consider the cost-effectiveness of the flowmeter and choose a cost-effective product.

　　In summary, when choosing a flowmeter for measuring municipal wastewater high flow rate, it is necessary to comprehensively consider a number of factors such as caliber and range, temperature and pressure, media characteristics, installation conditions, flowmeter type, after-sales service and cost-effectiveness. By carefully analyzing and comparing the advantages and disadvantages of different products, choose the appropriate flowmeter to ensure the accuracy and reliability of the measurement data.