Simultaneous Noncontact Measurement of Water Level and Conductivity
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23-10-2010, 10:28 PM

[b]Simultaneous Noncontact Measurement of Water Level and Conductivity[b]
water level and conductivity measurement is important in many applications. geophysics, ocean engineering, and the oil industry also rely on this. The gas/oil/water separation can be an example for this. for those application, the method of Noncontact measurement is suitable. For measuring the level, techniques such as Capacitance, radar, ultrasonic, and laser have been used. measurements of level and conductivity simultaneously has no tbeen possible. a novel inductive sensor is developed in this article. This method uses two coils of different sizes. These simultaneously infer conductivity and level based on a simplified model deduced from an analytical solution. simulation and experimental data are used to verify the model. A 3 percent accuracy is available for both level and conductivity measurements. water represents a significant phase component in many industrial applications. monitoring the sea level and the conductivity is very important in ocean engineering. biological growth (biofouling) or the buildup of sludge is the main
disadvantage of Traditional electrical salinity meters as they require contact measurement. conductivity variations affect the Noncontact methods, such as capacitive sensors. Radar, ultrasonic, and laser technology can only detect water level at high accuraacy but conductivity information cannot be simultaneously provided by it.

A new inductive sensor is described in this paper which uses two circular
coils of different radii. the imaginary part of the inductance is described by a new simplified model. simultaneous conductivity and level measurements can be obtained based on this simplified model

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