Installation of flow meters
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Flowmeters require specific dimensions of the pipes before and after installation, but what should be done if the installation distance is insufficient in practice?
Take it outside. If the requirements aren’t strict, then focus on practical use
It depends on how much the difference is. Check if there are expansion joints at the front and back; if so, it will be easier. If not, the only options are to replace the pipe section, increase the thickness of the gaskets, or use forceful knocking
See how much the difference is; if it’s not significant, then it can be used. If the difference is too large, it’s still necessary to connect it and install it, as the purpose of installing a flow meter is to ensure accurate measurement. If the measurement isn’t accurate, there’s no point in installing it at all. The distance requirement is to ensure accurate measurement by the flow meter. This post was last edited by LMT168 on 2008-3-12 at 14:21]
The straight pipe sections before and after the flow meter are provided to ensure measurement accuracy; without these necessary straight pipe sections, the accuracy will be significantly reduced. A flow meter cannot function properly if it is not possible to measure the flow rate accurately. The solution is to add a U-shaped section, with the flow meter installed on the straight sides of this U-shape, ensuring that the length of these straight sides meets the installation requirements. This post was last edited by hk6666 on 2008-3-12 14:53.]
If the flow meter is not replaced, then the pipe is led outside, and a flow meter is installed in some remote, open area where it can be seen.
Let me share my personal opinion. I think HK6666’s approach is incorrect. Flow meters of this type generally require straight pipe sections of 10 units in length before and after the meter itself; that is, the straight pipe sections should start from the flange of the meter. The method used by the person above violates this requirement. This is just my opinion; I hope everyone can discuss it together and learn from one another
For the installation of flow meters, the requirements regarding the visible sections vary depending on the type of flow meter; in some cases, it may be advisable to consider using a different type of flow meter for devices such as orifice plate flow meters, mass flow meters, and cone-shaped flow meters； At the same time, consider these aspects in the piping system in advance; trying to address them later is inefficient and not worth the effort.
See how much the difference is; if it’s not significant, it can be used – the impact is minimal, especially with mass flow meters