A question about installing flow meters
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May I ask: For loading liquefied gas, solvent oil, and lubricant base oils, what type of flow meter is suitable for each?
This post was last edited by oil transfer arm on 2009-8-7 at 18:35. There are specialized flow meters for liquefied gas, but their accuracy is not high. Many users have reported that mass flow meters work well for liquefied gas; for more details, see http://bbs.hcbbs.com/thread-381112-1-1.html. For other types of fluids, various volume flow meters can be used – for example, gear flow meters can achieve an accuracy of 0.2%. Of course, if you have enough money or require higher accuracy, you can also use mass flow meters.
Mass flow meters are commonly used, but their accuracy is not sufficient for liquefied gas, propylene, and similar substances. Continuous delivery can ensure an accuracy of 0.2%, whereas accuracy cannot be guaranteed in intermittent delivery; using a scale is a good approach
The price of mass flow meters is high; dual-rotor flow meters are a viable alternative. When used in conjunction with a scale, it is also possible to make timely corrections in case of deviations
In the projects I have worked on, mass flow meters are generally used in conjunction with load cells; the flow meter serves merely as a tool for comparison with the load cell, and the data used for commercial handover is based on the readings from the load cell.
What is the significance of comparing it with a geobarometer? Why not just use gravimetric measurement?
This post was last edited by poly0924 on 2010-9-14 at 10:19. Personally, I think the volume flow meter plus scale system is the better choice – scales offer higher precision, and it’s possible to calibrate the flow meter online so that it always operates with high accuracy. As for which type of flow meter to use, it depends on whether the trade settlement will be based on mass or weight; generally, domestic customers prefer to use weights, so using a mass flow meter would be a waste in such cases. If you have plenty of money, then it might be acceptable, but when using a volume flow meter, a thermometer is necessary. Using only scales doesn’t seem to be a good option, as it’s too easy to manipulate the readings on scales