Selection of 4.0MPA steam flow meter
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Could the teachers please provide an answer? Our company currently has two 4.0MPA steam flow meters, which were designed for internal use. Due to changes in circumstances, they are now to be used for trade purposes. The original meters were orifice plate flow meters of a split-type design. Will they still meet the requirements if not replaced? If I need to replace it, what type should I choose? The original precision was 1.5%, and the temperature was around 435 degrees
Is the poster trying to measure the flow rate of superheated steam at a pressure of 4.0 MPa and a temperature of 435°C? Is this steam flow used for trade settlement?
This post was last edited by a new member from Anshan on 2019-11-18 09:06, in accordance with standard HG20507-2014 6.1.3 Gas flow meters: accuracy of 2.5 for water vapor. If the accuracy of your existing orifice plate is higher than this. And it has temperature and pressure compensation. So, in my opinion, it can be used
It must be a throttling device, probably a flow balance meter; vortex flow meters aren’t an option in this case
Your accuracy is quite good! It can be used for settlement!
Yes, it’s used to measure steam flow, and now it’s being utilized for trade settlements
Thank you. **Are there any industry standards that set specific requirements for the accuracy of flow meters used in trade transfers? Can it be found?
I’m not sure what the size of your pipeline is; I use orifice plates with a DN450 diameter here. You need to consider the flow rate, as well as the possibility of removing the orifice plate for calibration – otherwise it will cause a lot of trouble later on.
From a cost perspective, vortex flow meters can be used for small diameters such as those below DN200, while orifice plate flow meters are suitable for larger diameters. Get a third-party test report. Definitely.