non-full pipe electromagnetic flow meter
(Non-full-pipe electromagnetic flowmeter)

The SET800 is an electromagnetic flow sensor with a built-in capacitive level measurement system, suitable for conductive liquids.
The flow rate Q(t) through the measuring tube is: Q(t) = v(t) x A(t).
in
v(1) = velocity of the liquid fluid
A(t) = the wetted cross-sectional area of the measuring tube. The signal voltage U is obtained from the electrode and is proportional to the average flow velocity v, and therefore also proportional to the flow rate q. The signal voltage is extremely weak, and the signal converter is used to amplify the signal voltage, filter it, and convert it into a signal for accumulation, recording, and output processing.
The wetted cross-sectional area A is calculated by a capacitive level measurement system installed inside the liner of the measuring conduit, combined with the known pipe inner diameter. The electronic mechanism for level measurement is housed in a single-piece housing. This electronic mechanism is connected to a discrete converter via a data communication bus.
The measurement principle involves electrode-induced voltage (proportional to flow velocity).
The magnetic field excitation coil of the inner capacitor plate used for height measurement measured the flow velocity based on known electromagnetic measurement principles. The two measuring electrodes were located at the bottom of the measuring tube, approximately 10% of the pipe's inner diameter at the liquid level.
This is to obtain reliable measurement results at a liquid level of 10%.
A conductive fluid flows through the interior of an insulated tube, cutting through a magnetic field. This magnetic field is generated by a pair of energized excitation coils. A voltage U will be generated within the fluid.
U=v*k*B*D
in
v = average flow velocity; k = geometric correction coefficient; B = magnetic field strength; D = electrode spacing