Onset Computer Corporation has expanded its line of field-proven conductivity data loggers with the new HOBO U24-002 Conductivity/Salinity data logger.

The new data logger significantly reduces the cost of monitoring conductivity, salinity, and temperature in ocean bays, estuaries, and other salt-water environments while making logger maintenance easier than ever. It features a non-contact sensor to reduce fouling-related measurement errors, easy access to the sensor for cleaning, and a durable Delrin® housing for years of reliable performance in corrosive coastal environments.

"This new HOBO Conductivity/Salinity logger builds off the tremendous success of the fresh-water HOBO Conductivity Logger we introduced last year," Paul Gannett, product marketing manager for Onset. "Now, for a fraction of the cost of current solutions, environmental researchers can get high-accuracy salinity measurements in salt-water environments without having to spend as much time in the field maintaining their loggers."

Powerful, intuitive software

Onset's HOBOware Pro software makes it easy to graph and analyze water salinity data, and offers a number of features that simplify salinity monitoring projects. It provides easy, accurate conversion of conductivity data to salinity measurements using the Practical Salinity Scale 1978 (PSS-78). Users can enter calibration values from the beginning and end of a deployment to compensate for fouling. The software also makes it easy to combine data sets from multiple loggers, and offers one-click data export to Microsoft® Excel and other programs.

Convenient data offload

The HOBO Conductivity/Salinity Logger offloads data to a PC via a convenient optical USB interface, which provides high-speed, reliable data offload. The optical design eliminates problems associated with failure-prone mechanical connectors. The logger is also compatible with Onset's HOBO Waterproof Shuttle, which provides easy and reliable data retrieval and transport in wet environments.

Pricing and availability

The HOBO U24-002 Conductivity/Salinity data loggers will be available directly from Onset in May, 2011, and will be priced at $750. Software and accessories are priced separately. Visit http://www.onsetcomp.com/salinity for pricing details and technical specifications.