A vortex meter measures the downstream vibrations. The function is very easy as the downstream vibrates it gives a signal to the barrier that is placed to move in a stream. This frequency of vibrating filed of a vortex can also be compared to the velocity of flow. A vortex meter is also known as vortex shedding flow meters or oscillatory flow meters.
The density of a magnetic field and the pipe diameter have fixed values, therefore the value (k) is combined just to reduce the equation. The function of a magnetic flow meter basically lies on the famous Faraday’s Theory of electromagnetic induction. Magmeters are used to find out the current of conductive liquids. Earlier the designs of magmeters were based on 1 to 5 microsiemens per cm so that they could function properly. As the time passed a new design was made and that required hundredfold between .05 to 0.10 which was way less than the previous design.
The magmeter flow meter basically is a mixture of nonmagnetic tube with an insulating material. If there is a flow of liquids through the diameters of the pipe to the magneticfield density that is produced by the spiral, then the power that is developed across the electrodes would be proportional to the velocity of the liquid that is flowing. As discussed before the value ‘K’ just acts as a calibration factor to simplify the equation and make it easy. Therefore, the density of a magnetic field and the pipe diameter have fixed values, therefore the value ‘K’ is combined just to reduce the equation. It reduces the equation to E equals K.V
Difference of velocity at other positions of the profile of flow is always compensated by signs of weighing factors. Recompense is also done by giving a new shape to the magneticspirals in a way that the magneticflux would be greatest of all where all the signals would be giving a low value, and viceversa.
The manufacturers have determined that the L factor of each magmeter by the water level of the flow tube. The value of K that is used in the equation is then suitable for any other fluid and at the same time is straight over the range of the flow meter. Flow tubes are mostly calibrated by one velocity at a time. Magmeter helps in measuring the current in both the directions.
