Magnetic flow meters offer average to better than average upstream and downstream requirements. The average requirement is 5 times the pipe diameter upstream and 2 to 3 times the pipe diameter downstream. These requirements are similar to ultrasonic, thermal, vortex, turbine and paddle flow meters.
Technologies with lower requirements in general include Coriolis, variable area, and positive displacement flow meters. These flow meter technology types typically do not require any upstream or downstream requirements. Another factor to consider regarding upstream and downstream requirements is that insertion models typically will have higher upstream pipe requirements than inline models. To learn more about upstream and downstream flow meter requirements in general, visit our article on the subject.