Flow Transducers


The measurement of biological fluid flowrates is of diverse medical significance and interest. For example, the reduction or occlusion of blood flow in either the major or microcirculatory systems is indicative of vascular disorders; the accurate measurement of blood flow in the affected areas can be essential for proper diagnosis and treatment. Similarly, monitoring air and other fluid flowrates have important clinical applications. Biological fluid flow can be measured using the following principles: pressure gradient, electromagnetic, ultrasonic Doppler, laser Doppler, thermal transport, venous occlusion plethysmography and indicator dilution.


For the following areas of interest, please click on the desired heading.

Pressure Gradient Flow Transducers 

Magnetic Flow Transducers

Ultrasonic Flow Transducers

Laser Doppler

Thermal Transport Flow Transducers


Indicator Dilution Method


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Support for the development of this module was provided by the National Science Foundation and The Cooper Union for the Advancement of Science and Art.

Please send questions or comments to Professor Ron Adrezin or Professor Daniel Raichel.