Apparatus for high speed image capture during measurement of capillary pressure in a porous sample

Abstract

A measurement device including a centrifuge for holding porous media samples configured to test samples under centrifugal motion during rotation. A fluid capture device adjacent each media sample receives fluid from the sample due to centrifugal motion. A measurement system measures an amount of fluid from the media samples by taking an image of a fluid meniscus in the fluid capture device. A position sensor determines a position of the fluid capture device and triggers a camera to take the image of the fluid meniscus when the fluid meniscus is in a field of view of the camera. To prevent a false image from appearing in the captured image, a shield blocks light from reaching the camera when the meniscus is not in the field of view. The image of the fluid meniscus is processed to determine a fluid volume correlated to capillary pressure of the media sample.