On the measurement of steam
Thread Content
I would like to ask fellow sailors: for purchasing steam externally, what type of flow meter is most suitable for accurate measurement? One type is medium-pressure steam at 4.0 MPA, and the other is low-pressure steam at 1.0 MPA.
Orifice plates are commonly used in vortex flow meters; they need to have temperature and pressure compensation. For measurement purposes, average velocity tubes can also be used – they are easy to install and inexpensive
A balanced orifice flow meter can be used for this
Thank you for your helpful answer, Haiyou. Could you recommend a few reliable and good brands?
Thank you for your helpful answer, Haiyou. Could you recommend a few reliable and good brands?
Previously, the orifice plates used for steam measurement in our factory were fairly decent, but when problems arose they could be quite tricky to deal with. I recommend using vortex flow meters – they have fewer issues and are easier to maintain. As for brands, E+H or Rosemount work well for vortex flow meters; I’m recommending these brands not because my company is an agent for them. Those of you who have used them already know that these two brands are indeed reliable. If you need help choosing a model, feel free to contact me
Such steam conditions are actually quite simple; flow meters based on various principles can be used to measure them, and the ones I see most often are orifice plates and similar devices.
It’s better to use imported brands for vortex flow meters; it’s too troublesome if problems arise
The steam pressure of 4.0 MPa is too high; using vortex flow meters is not appropriate
A steam pressure of 4.0 MPa can be met by E+H vortex flow meters; if you disagree, I can send you relevant information
Orifice plate technology is mature and classic, but it results in high pressure loss； Many people use vortex flowmeters nowadays, but these meters have poor resistance to interference.