Seek help regarding the selection of a flow meter for the pump outlet
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The material is inorganic, with a pipe diameter of around DN50. Due to its low conductivity, electromagnetic flowmeters are not suitable; their price is too high and not acceptable to the owner. The owner is considering metal tube rotameters or orifice plates combined with differential pressure transmitters. Which option would be appropriate? What are the advantages and disadvantages of each of these two?
Inorganic materials can use metal rotameters. http://www.shakic.com/cp/product10.htm Stainless steel gear flow meters can also be used, with accuracies of 0.5 and 0.2; no straight pipe sections before or after are required. http://www.shakic.com/cp/product5.htm
Vortex street types can also be considered; metal rotors are prone to getting stuck
Since we need to take the owner’s requirements into account, we should consider the price he is willing to accept and then select an appropriate flow meter. If the material does not tend to crystallize, it is recommended to use a rotor type flow meter – it is inexpensive and effective
The poster didn’t explain the working conditions very clearly. From what can be seen, both orifice plates and metal rotor flowmeters can be used. If a metal rotor is used, it is important to note that due to the high impact forces when the pump starts, a check valve can be installed at the pump outlet. It is also advisable to use a flow meter with damping to prevent it from being damaged.
For inorganic materials, if nothing else works, use V-cones (which combine the advantages of annular orifice plates and Venturi tubes) together with transmitters; they offer higher accuracy compared to orifice plates, and their price is also reasonable. My QQ: 1602603976
Thank you all. I’m considering orifice plates for now. Also, there was a mistake in the content of my post – it should have been organic materials. Why can’t I edit my own posts anymore?