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Analysis of Causes of Failure of Corrosion Resistant Mass Flowmeter

Analysis of Causes of Failure of Corrosion Resistant Mass Flowmeter
Anti-corrosion mass flow meter is a kind of flow meter with high measurement accuracy. It can be used to measure liquids, as well as gas, slurry, etc. However, the gas-liquid two-phase flow cannot be measured. Therefore, the principle of anti-corrosion mass flow meter should be grasped when installing, that is, to ensure that the anti-corrosion mass flow meter can not have gas in the measurement tube when measuring the liquid, and the measurement tube cannot have liquid when measuring the gas. Corrosion resistant mass flow meter structure uses two U-shaped tubes arranged side by side, so that the return bends of the two tubes are slightly vibrated towards each other, and the straight tubes on both sides will vibrate, that is, they will move closer together or open at the same time, ie The vibration of the two tubes is synchronous and symmetrical. The working principle of anti-corrosion mass flow meter refers to the flow meter made based on the previous principle, consisting of a sensor and a transmitter (core processor) for signal processing, and a flow totalizer to constitute a flow measurement system.
The anti-corrosion mass flow meter measures the mass flow directly or indirectly by measuring the fluid flowing in the rotating tube.
Corrosion resistance When the mass flowmeter fails, the fault can be analyzed based on the difference in measurement parameters to eliminate the fault.
1. When it is found that the anti-corrosion mass flow meter indicates that the instrument is not working properly, you can go to the site and check the indication value of the same intuitive instrument. If they are very different, it is likely that the anti-corrosion mass flow meter system has failed.
2. Before analyzing and checking the failure of anti-corrosion mass flow meter system, the operating personnel should be informed about the production load and the change of the parameters of the raw materials, view the recording curve of the fault meter, and conduct a comprehensive analysis to determine the failure of anti-corrosion mass flow meter. The reason lies.
3. When the process parameters were changed, it was found that the recorded curve was abrupt or jumped to a large or small zui. At this time, the fault was often found in the instrument system.
4. Before the failure occurs, the instrument record curve has been performing normally. After the fluctuation, the recording curve becomes irregular or the system is difficult to control. Even the manual operation cannot be controlled. At this time, the failure may be caused by the process operating system.
5. Before analyzing the failure of the anti-corrosion mass flowmeter, it is necessary to thoroughly understand the production process, production process conditions and conditions of the relevant instrument system, understand the design scheme and design intent of the instrument system, and the structure and characteristics of the anticorrosion mass flowmeter system. , performance and parameter requirements.
When analyzing the cause of the failure of the anti-corrosion mass flowmeter, we must comprehensively consider and carefully analyze both the field instrumentation system and the process operating system to check the reason.
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