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Installation location of electromagnetic flowmeter

2009-03-26View Original

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The electromagnetic flowmeter is installed near 4 1000Kw high-voltage motors – will this have any impact on their operation? What distance should it be? This post was last edited by zjgjjx on 2009-3-26 15:11]
Reply #22009-03-26
There should be an impact; the magnetic field generated by the motor will affect the flow meter.
Reply #32009-03-26
No need to think! It has an impact! To reach 14 meters away with almost no impact.
Reply #42009-03-26
It depends on how far it is! Specific details should be consulted with the manufacturer from whom the order was placed.
Reply #52009-03-26
There is definitely an impact; it’s better to consult the manufacturer for specific details.
Reply #62009-03-26
Ask the manufacturer about it; be sure to pay attention to grounding
Reply #72009-03-27
There must be an impact; after the coil is energized, a magnetic field is generated
Reply #82009-03-27
Electromagnetic flowmeters generate voltages on the millivolt level; proper shielding and grounding can help, and it’s also a good idea to use metal plates or similar elements for isolation
Reply #92009-03-27
Installation requirements for electromagnetic flowmeters: 1) When measuring mixed-phase fluids, select a location where phase separation will not occur; When measuring two-component liquids, avoid filling them downstream where the mixing has not yet been uniform ; When measuring chemical reaction pipes, it should be installed downstream of the section where the reaction is fully complete ; Try to ensure that the straight sections before and after are at least 5D and 2D respectively ; 2) Try to avoid negative pressure forming inside the measurement tube ; 3) Choose a location with minimal vibration, especially for integrated instruments ; 4) Avoid having large motors, large transformers, etc., in the vicinity to prevent electromagnetic interference ; 5) Locations where it is easy to achieve separate grounding for sensors ; 6) Try to avoid areas with high concentrations of corrosive gases in the surrounding environment ; 7) Avoid direct sunlight as much as possible. As required in point 4, the electromagnetic flowmeter is installed near 4 1000Kw high-voltage motors, which will certainly have an impact on its operation. As for the distance, different manufacturers and brands have varying requirements; the specification determined by the manufacturer shall prevail. Personally, I think it’s best to ensure a distance of over 20 meters
Reply #102009-03-27
It’s less than 10m; the flow meter is DN500
Reply #112009-03-27
We’ve encountered the same problem at the outlet of a 350KW pump; it hasn’t been used yet, and it seems like it will be difficult to use it. The manufacturer said that covering it with metal sheeting might help, but it’s still not clear what the actual outcome will be
Reply #122009-03-27
There is definitely an impact; the farther away, the better.
Reply #132009-03-27
It seems that it’s impossible to overcome these obstacles; if installation is still desired, you need to let us know how things will be after the installation.
Reply #142009-04-09
There must be an impact, but the impact of imports might be smaller
Reply #152009-04-10
It definitely has an impact… Be careful, OP :L
Reply #162009-04-10
I’m not sure whether it should be integrated or separate… I think it’s better to go with a separate design. The separate components can be placed at some distance from each other. The sensors should be covered with metal shields, both for shielding purposes and to protect the instruments. The motor also needs to be covered with a metal shield, and this shield must be grounded separately… Of course, the motor itself also needs to be properly grounded. Once the installation location is determined, it’s necessary to find ways to shield against these electromagnetic interferences.
Reply #172009-04-13
Whether it’s a separate unit or an integrated one, I think it will definitely have an impact.

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