Which approach is reasonable: adding tees outside the electromagnetic flowmeter or reducing the diameter inside the flowmeter?
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Experts, in order to increase the flow rate or achieve full pipe capacity, it is necessary to use a reducing elbow between the pipeline flange of the electromagnetic flowmeter and the flowmeter’s own flange. Another option is to use an electromagnetic flowmeter with an internal reduction. Which approach is more reasonable?
For reduced-diameter applications, special electromagnetic flowmeters are required, and their prices are quite high. It is necessary to leave a straight pipe section that is at least 10 times longer than the reduced diameter portion of the pipe; otherwise, the flow measurement will be inaccurate. You can calculate the costs based on the specific conditions on site, or if you don’t want any hassle, you can simply replace the flowmeter
I am from Ruiling, a manufacturer of flow meters, specializing in fluid flow measurement, quantitative control, and automation solutions. Feel free to contact me if you need any assistance
What diameter is meant by ‘retraction’? Unless the diameter of the electromagnetic flowmeter is less than dn15.
Generally, the pipe sizes are in different diameters, with sufficient straight pipe sections provided. Receding necks are rare unless it’s for small diameters like 3mm or 5mm
The cost of using a retracted neck is too high; it’s better to use a conversion fitting along with a welded connection piece, which is more convenient to use
In industrial applications, diameter variation is generally used, as flow meters with self-contracting features are less common. It’s not because of higher costs; there are self-contracting types available for water treatment applications, both circular and rectangular in shape, and these can also be used in industrial settings. However, they can only measure non-corrosive media such as water. The lining is made of rubber or through coating, and the cost is similar to that of ordinary flow meters – not much more expensive. We can manufacture such products; feel free to contact me if you need them
As for the reduced inner diameter, it doesn’t seem reliable