Differences between single-orifice plate flowmeters and multi-orifice plate flowmeters
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What are the differences between single-orifice plate flow meters and multi-orifice plate flow meters, and what are the selection principles when designing them?
The porous type is called a regulating flow meter or a balanced flow meter; it has low pressure loss, low requirements for straight sections before and after it, and high accuracy
You can look up the Baidu encyclopedia entry for balance flow meters on Baidu; it’s written in great detail
For porous orifice plates, the requirements for the straight sections before and after the orifice are not as strict; they have a larger range of operation and lower pressure loss.
According to the report, what is the maximum measurement diameter? I’ve seen owners use DN600.
The porous part needs to be calibrated; there seems to be no upper limit on the diameter. Once it is turned into a finished product, it must be taken for calibration in order to determine the discharge coefficient corresponding to the Reynolds number of the flow rate you intend to use
The straight pipe requirement for adjustable orifice plates is probably 8:1, and the precision should also be higher