INDUCTIVE CONDUCTIVITY CELL FOR WATER SALINITY MONITORING

A. Lopes Ribeiro, Helena M. Geirinhas Ramos, Pedro M. Ramos, J.M. Dias Pereira
Abstract:
In this paper we describe an inductive sensor constructed as a double transformer, to be utilized to measure the water salinity in the sea and estuaries. The sensor uses two toroidal cores. Each core is provided with one single winding. The windings have equal number of turns. The electromotive forces developed in the water give rise to electrical currents which act as the secondary currents of one transformer and the primary currents of the other. Therefore, the relation between the voltage applied to the primary circuit and the voltage in the secondary depend on the conductivity of the water.
Keywords:
inductive conductivity sensor, water conductivity, electrolytic conductivity, salinity
Download:
PWC-2006-TC19-002u.pdf
DOI:
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Event details
Event name:
XVIII IMEKO World Congress
Title:

Metrology for a Sustainable Development

Place:
Rio de Janeiro, BRAZIL
Time:
17 September 2006 - 22 September 2006