1. The large diameter of the process pipeline requires the pressure loss of the flow meter to be as small as possible. Generally, the method of increasing the diameter of the pipe is not used to increase the flow rate;
2. For newly designed and installed pipelines, generally select the appropriate flow rate. Because the flow rate of the fluid is too low, the diameter of the flow meter is large, and the investment of the corresponding meter increases. If the flow rate of the fluid is too high, the power pressure loss will be large, and the operating cost will increase. It is uneconomical, but the volume of the flow should be left for future expansion.
3. Due to the low flow rate of the fluid, the dirt in the fluid, sludge and scale after running for a long time, is easily deposited on the inner wall of the pipe and the electrode. In the engineering design, the cleaning of the contact part of the instrument and the fluid should be considered; if the electromagnetic flowmeter cannot be cleaned and the electromagnetic flowmeter is used, the scraper electrode can be used;
4. The meter's measurement range is required to be large. Some water flows are very different from the daytime, winter and summer flows, which are several times larger. Therefore, the flowmeters of these waters require a particularly large range of ranges;
5. The instrument's protection level is high. Large-diameter pipelines are mostly laid in the ground to save investment and space. In the north, it is also necessary for anti-freezing. Therefore, split flow sensors are mostly installed in the instrument well. Due to rainwater, wellbore leakage and leakage of pipelines, the water level in the well often rises and the flow sensor is flooded. Therefore, this situation should be estimated during the design. The submersible flow sensor, such as IP68 protection grade, is selected. At the same time, the instrument well is well treated for waterproofing.
6. Since the verification of large-caliber flow meters is often difficult to disassemble, transport and install, the process is not allowed to stop and stop production. It is hoped that the instrument can perform dry calibration online.
Concerned about surprises
Label: Flow Meter Range Range Flow Rate Flow Sensor
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