Dissolved oxygen should not be negative. Can you determine the error that created the unusual oxygen profile above?
Q&A: Negative Oxygen Values
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Newsletter
RS-232 Sensor Integration Guide
Unlike analog auxiliary sensors, instruments that output serial RS-232 data are more challenging to integrate with Sea-Bird Scientific CTDs. Despite RS-232 being a standard communication protocol, most instruments have a unique data output format and command set. As...
Sea-Bird Scientific Photo Contest
From today until April 30th , submit your best photos and view entries to our 5 categories for a chance to win one of several prizes, including Sea-Bird Scientific swag and some grand prizes. Most Biofouled Sea-Bird Scientific instrument: biofouling sets in and–in...
Tech Tip: Cable Search
Consider this hypothetical situation: you find a loose cable with a 6-pin connector and a 4-pin connector - exactly what you need to connect an oxygen sensor to your CTD. However, just because the cable ends fit on the instrument connectors, you still don’t know if...
Q&A: Temperature Mismatch
Although they should match perfectly, the two sensors rarely reported the same temperature value throughout their deployment. Furthermore, the 16plusV2 appeared to stop logging, although the batteries still had life upon recovery. Can you identify the problem?
Q&A: Diagnose This Profile
The data shows conductivity from a 19plus deployed in a shallow estuarine river. The red line shows the CTD downcast and the green line shows the upcast. While the upcast data show the expected shape for a CTD profile (low conductivity at the surface, rising conductivity as the CTD descends), the downcast shows an unusual shape in until about 2.6 meters depth, where conductivity appears to suddenly correct itself.
Discontinued – WQM and WQMX
July 2020 Newsletter Over the past 12 years, the WQM and WQMX have been integral to accelerating the understanding of natural waters. This instrument family was the first collaboration between WET Labs and Sea-Bird Electronics before our companies became fully...
Tech Tip: Julian Days Format
Tech Tip: Julian Days Format “Julian Days” is a numerical timestamp format, calculated by Sea-Bird Scientific CTDs as the number of the days since Jan 1 of that year (e.g., noon on Feb 3 = 34.5). While this format is useful, it is usually more convenient to display...
Q&A: Diagnosing Salinity Spikes
Q&A: Diagnosing Salinity Spikes The figure above shows a time series of salinity from a moored CTD. For most of the deployment, salinity showed frequent downward spikes, dropping from an expected range of 18-26 psu to near zero. Can you determine the cause?...
Product Update | AC-9 Discontinuation and Service Timelines
In 2011, the Sea-Bird Scientific AC-9 (formerly WETLabs AC-9) was discontinued and replaced by the Sea-Bird Scientific AC-S. We recognize that many users rely on Sea-Bird Scientific products for several years, so we have continued to offer Best Effort Service for the...
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OCEANS 2024
We hope to see you at OCEANS 2024 We are excited to sponsor and exhibit at the upcoming OCEANS Conference & Exposition in Halifax, NS, Canada from September 23 -26. Please come visit our team at booth #213. Overview The OCEANS 2024 Halifax conference is for global...
UG2 Workshop 2024
We hope to see you at UG2 '24 We are excited to sponsor the upcoming 2024 Glider Workshop in Ann Arbor, Michigan, from September 10 - 12, 2024. Overview This workshop will bring together the global underwater glider community to strengthen international collaboration...
Press Release: SBS Water Quality Monitoring Study to Be Featured on PBS’s Changing Seas Series
Press Release Wednesday, June 26 2024 Collaboration and partnership is at the core of what we do. We are - Enabling the science that matters - working with scientists and researchers across the globe to provide instrumentation that produces defensible and accurate...
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