April 2019 Newsletter Sea-Bird Scientific’s line of ISFET pH sensors only communicate via RS-232. However, savvy integrators can utilize the SBE 44 Underwater Inductive Modem as the link between the SeaFET/SeapHOx and an existing inductive modem mooring, providing...
Science and Technology
Q&A: High Residuals in pH Data
March 2019 Newsletter The data shown above come from a SeapHOx V2 (red) and Deep SeapHOx V2 (blue) deployed next to one another in a dynamic estuarine environment. Regular pH validation samples were collected throughout the time-series. According to the 0.05 pH...
Q&A: What is Causing This “Feature” in pH?
The data above originate from a SeaFET pH sensor connected to a flow-through system that should provide stable, consistent data. As you can see, the Internal pH value experiences a dramatic drop in pH and a subsequent increase in noise midway through data collection....
pH Sensor Flowchart
There are plenty of pH sensors on the market, with some recent additions showcasing novel technology and design. Among Sea-Bird Scientific’s holdings, we offer 7 different pH sensor models divided amongst 2 different technologies: ISFET and glass-electrode sensors. To...
Video: Comparing the SeaFET V1 and SeaFET V2 Interface
Back in May 2018, Sea-Bird Scientific upgraded the SeaFET™ pH sensor to the “SeaFET™ V2”, improving upon the performance of the original SeaFET™ while retaining the same underlying ISFET sensor technology. The SeaFET™ V2 improves upon the original SeaFET’s...
Q&A: Two pH Sensors – what is causing this difference?
January 2019 Newsletter The data shown above originate from two different pH sensors deployed in the same well-mixed test bath. Both sensors were cleaned, tested, and calibrated before deployment, and were given 24 hours to equilibrate before recording data. So why...
Basic Maintenance videos for the SeaFET V2
Upgrading to a SeaFET V2 from the original SeaFET is completely internal—aside from the most inaccessible hardware within the instrument, the V2 uses the same housing, sensors, and batteries as the V1. Therefore, the basic maintenance procedures for the V1 and V2 are...
Q&A: What is Causing the Difference between Internal and External pH?
The figure above originates from a single Shallow SeaFET V2 pH sensor, which produces two pH values (Internal pH and External pH) from two separate reference sensors. The black X’s indicate pH validation samples. While environmental conditions affect each the...
Q&A: Sudden Increase in Salinity
November 2018 Newsletter The figure above originated from an SBE 37-SMP MicroCAT moored CTD deployed in shallow seawater. On day 38, the salinity data appears to jump from a near-zero value, steadily increasing until around day 43, where it stayed around 30psu. Nearby...
Salinity Spikes: Sensor or Environment?
These data show a subtle problem that is producing “fuzzy” salinity and oxygen data. While the overall shape of the profile appears reasonable, small spikes are present throughout the CTD cast. The black lines encompass a particularly strange spot where both salinity...
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January 2024 Newsletter
Welcome to the Sea-Bird Swell – our monthly newsletter that gives you the latest in what’s happening at Sea-Bird Scientific, and the broader oceanographic community. CTD Appreciation Day Was January 22nd! HANDS OFF AND HIGH-QUALITY DATA: USING THE HYDROCAT-EP V2 CTD...
Oceanology International 2024
We hope to see you at #Oi24 We are excited to return to Oceanology International 2024 again in London, UK from March 12-14. Overview Oceanology International brings together 500+ exhibitors in the only event that links the three key players in the industry:...
Ocean Sciences Meeting 2024
We hope to see you at #OSM24 We are excited to return to Ocean Sciences Meeting 2024 in New Orleans, Louisiana from February 18-23 at booth number #527. Overview The Ocean Sciences Meeting 2024 is co-sponsored by the American Geophysical Union, the Association for the...
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