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RS-232 Sensor Integration Guide

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...

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Q&A: Temperature Mismatch

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?

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Q&A: Diagnose This Profile

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.

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Q&A: Diagnosing Salinity Spikes

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?...

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Ocean Sciences 2020 Conference Posters

Ocean Sciences 2020 Conference Posters

Missed us at Ocean Sciences 2020? Check out digital copies of our Science Team’s conference posters to learn more about what they are working on: Field Performance of an ISFET Based Profiling pH SensorCharles W. Branham, Vladislav Simontov, Yuichiro Takeshita &...

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Q&A: Two Symptoms of the Same Problem

Q&A: Two Symptoms of the Same Problem

May 2020 Newsletter The data above show two major symptoms of the same problem occurring in different locations on a 19plusV2 profiling CTD. On the left, oxygen appears to drop below zero and is highly erratic during the downcast (light blue). However, once it hits a...

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Tech Tip: Troubleshooting a misfiring bottle

Tech Tip: Troubleshooting a misfiring bottle

Tech Tip: Troubleshooting a misfiring bottle The SBE 32 and SBE 55 water samplers utilize a unique electromagnetic design to reliably capture water. Did you know that the latches are also dishwasher safe? Watch this video to learn how to remove and clean water sampler...

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Q&A: Moored Data Excursions

Q&A: Moored Data Excursions

February 2020 Newsletter The data above came from a HydroCAT-EP multiparameter probe moored in an estuary near Savannah, Georgia. The highlighted section shows a sudden change in the temperature and salinity data that lasted for approximately 4 days, and continued...

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Q&A: Negative Fluorescence Data

Q&A: Negative Fluorescence Data

December 2019 Newsletter Fluorescence is the light emitted by a particle after excitation from another light source. Sea-Bird Scientific fluorometers are widely used to measure fluorescence from chlorophyll as a method of measuring primary productivity. The figure...

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Q&A: Erratic Profiles

Q&A: Erratic Profiles

November 2019 Newsletter The data above come from a profiling CTD, deployed in sea conditions that caused approximately 1-meter ship heave. Two things stick out – relatively unchanging salinity data during the downcast, and noisy data during the upcast (shown in light...

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Featured Posts

Sea-Bird University January 2022

Upcoming Session - January 26th 2022, 3:00 pm PST: How to use, deploy, and maintain the new HydroCAT-EP V2 The new HydroCAT-EP V2 is now available. While it may look similar to its predecessor, we've built some new enhancements into this next iteration. Join us for a...

Oceanology International 2022

We're excited to announce Sea-Bird Scientific is attending the Oceanology International Conference this year from March 15 - 17, 2022. Due to the pandemic, our presence will be more limited than in previous years. We will be sharing our booth with one of our partners,...

Calibrating the HydroCAT-EP V2’s pH Sensor

The pH sensor on the new HydroCAT-EP V2 is accurate to 0.1 pH for 90 days, reducing the time you need to spend on maintenance. Beyond that, calibration is a simple process that users can do in the lab or field. Watch Cody Littleton, our primary HydroCAT-EP Service...

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