Calculating Specific Conductance with Sea Water
The Conductivity Assistant (version 2.0 or earlier) shipped with HOBOware® 3.2.1 has been modified to further refine the equations used to calculate specific conductance with sea water using the U24 Conductivity logger (U24- 002 and U24-002-C). Version 2.0 and earlier versions of the Conductivity Assistant were not producing the expected measurements when calculating specific conductance with sea water. Careful analysis determined that the Conductivity Assistant needed an additional level of precision to ensure the calculations were meeting the specified accuracy range (see the logger product manual) for the calibrated specific conductance output when used in sea water. This involved improving the output of specific conductance versus time and the output of salinity versus time, using the Practical Salinity Scale 1978, which is a time-tested tool that provides sufficient accuracy for a conductivity-based measurement system for typical ocean waters. The new calculations are available in version 2.1 of the Conductivity Assistant.
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