Vortex flowmeter occasional fluctuation interlock

This post was last edited by ZhiGE on 2019-1-10 at 18:21. 1. Basic process conditions as specified in the technical requirements, such as medium type, temperature, pressure, whether it is a liquid or a gas, etc. 2. Description of the process flow and installation location, including whether it is located near any vibration sources. 3. Introduction to E+H vortex flowmeters, including model types, whether they are modular or integrated, whether they are designed for high temperatures or normal temperatures, and whether the instruments provide alarm and fault information. Whether to use 475 or software to read alarm information and fault frequency information; what does “occasionally” mean – once a day, once a week, once a month? 5. Is temperature and pressure compensation implemented? Can faults in temperature and pressure also cause changes in flow rate? 6. When did it start to occur? Are there any typical changes in the process conditions or external factors, such as rain or thunder, as well as changes in the process load? 7. Since interlocks are involved, it is also necessary to determine whether the designed SIL level is sufficient; otherwise, the availability will be inadequate, as vortex flow meters are highly susceptible to external vibrations and fluid influences. It is recommended to first disable the interlock, conduct risk assessment and prepare contingency plans, and then re-enable it after the issue is resolved. If the question is not well-posed, how can the answer be thorough and effective? Once all the issues mentioned above have been searched for and verified, the cause can generally be identified.

You can ask the gods about this question.

1. Monitor the flow rate with a flow meter to see if there are any changes； 2. Check if there is any vibration near the flow meter ； 3. Check for any historical alarm messages