Liquid Level Measurement

Machine vision systems measure fill levels in liquid handling devices

Cognex Liquid Level Measurement for Medical Vials

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IVD laboratory automation systems require 100% effective liquid handling functionality. In these systems, validating the volume of liquid is often critical to knowing the system is operating properly and ensuring the quality of the test result.

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Machine vision systems are able to reliably perform liquid level measurement because they have no moving parts or sensors that can wear out or fail. Machine vision is able to find the meniscus in a vial or the edge of liquid in a capillary tube even when measuring very small amounts. Outside a vessel, the measurement of the size of droplets or a liquid spot can aid in correlating the results of a test procedure. Machine vision systems can even measure the different levels of the separated phases of centrifuged blood and the thickness of the buffy coat.

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