Patent ID: 6847216
Filing Date: 2005-01-25
Classification: G01N

Abstract:
1. A sensor adapted to be disposed in a flow of fluid for detecting changes in the dielectric constant of the liquid, the sensor comprising: a first elongated electrode member having a metallic core and a first dielectric, fluid contacting surface; a second elongated electrode member having a metallic portion and a second dielectric, fluid contacting surface; a support supporting the electrodes and the fluid contacting surfaces in a spaced, substantially parallel disposition with the first and second dielectric, fluid contacting surfaces facing one another to accommodate the circulation of fluid through the space between the electrodes; and a ramp disposed on the support between the dielectric surfaces of the electrodes; the ramp intersecting the first and second contacting surfaces at obtuse and acute angles respectively and providing a surface angularly disposed relative to electric field coupling between the first and second electrode, thereby reducing parasitic effects of the sensed dielectric constant of the liquid.