Electromagnetic flowmeter is less affected by the bend, straight pipe length requirements are much lower than throttling differential pressure type, vortex street type and other flow meters.
But because the Supmea electromagnetic flowmeter for the measurement value of the high precision requirements for external installation changes, may also have a greater impact on the measured value, so effectively improve the bend for the measurement of the impact of a very important significance. In order to reduce the impact of the bend for the measurement of the fluid, in addition to increasing the instrument before the straight section, users can also try to reduce the impact of the installation method.
Bend downstream of the flow velocity distribution impact of fluid flow through the bend due to centrifugal force, by the outer wall of the diffusion effect, the inner wall of the contraction effect, which produces lateral flow of the secondary flow, resulting in downstream velocity distribution distortion. Currently the vast majority of electromagnetic flow sensor is non-uniform magnetic field distribution structure design. Non-uniform magnetic field theory that contains the electrode measuring tube cross-sectional plane area, each tiny liquid volume element cutting magnetic lines of force on the signal between the electrodes "play a role" is different, so it is not uniform, but according to the "role" non-uniform design of the magnetic field strength at each point, so that under ideal conditions the flow velocity distribution. So that under ideal conditions the flow distribution distortion does not affect the flow measurement. However, the actual instrumentation is still affected in some way.
Supmea produces electromagnetic flowmeter for many years, if you encounter any problems in the process of electromagnetic flowmeter selection, installation, use, maintenance, you can feel free to contact with Supmea staff, we answer for you.
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