KOZENY-CARMAN EQUATION

The Kozeny-Carman equation is one of the most widely accepted and used derivations of permeability as a function of the characteristics of the medium.  This equation was originally proposed by Kozeny (1927) and was then modified by Carman (1937, 1956) to become the Kozeny-Carman equation.  In essence, this equation will estimate the permeability of media based on a grain size distribution. This equation is given by:

There are many resources available for more information on the Kozeny-Carman equation.  For this newsletter the following textbooks were used:

Batu, V. (1998). Aquifer Hydraulics; A Comprehensive Guide to Hydrogeologic Data Analysis. Published by John Wiley & Sons, Inc. New York, NY.

Bear, J. (1972). Dynamics of Fluids in Porous Media. Published by American Elsevier. New York, NY.

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REELOGGER

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The Reelogger is a water level and/or multiparameter datalogging system that introduces many new concepts ideal for field use by hydrogeologists, hydrologists and anyone wishing to monitor water automatically.

Main Features of the Reelogger

• Highly accurate sensors, with long term stability, and minimized calibration requirements

• Narrow 7/8" (22 mm) dia. in-line sensors

• Modular choice of level and/or water quality datalogging

• Easily transportable reel has marked tape & logger in reel

• Only requires 2-conductor cable and 9V batteries

• Instant display of readings and other functions with LCD display and Onboard 3-Button Software