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Analog Sensor Integration Guide

Analog Sensor Integration Guide

From bottom contact triggers to transmissometers, oceanographic sensor options are vast and diverse, and choosing the right combination of sensors can significantly augment a CTD’s measurement capabilities. Although getting disparate technologies to talk to one...

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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: 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: 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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pH Sensor Flowchart

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...

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Featured Posts

Video: Simulating an Inductive Mooring

Conceptually, inductive moorings seem complex - communicating with 100 instruments through a single cable doesn’t exactly sound intuitive. But, in practice, the setup is surprisingly simple. Watch our latest video to see how easy it is to test and simulate an...

5 Inductive Modem Configurations

A buoy, a jacketed wire rope, and some exposed metal. In its simplest form, that’s all you need to create an inductive modem (IM) mooring. The buoy supports the surface modem, power supply, and data logging/transmission. Some buoys may also contain weather sensors, or...

What is Oceanography?

Oceanography encompasses so many different elements, but at its core, it is the application of the major scientific disciplines to our oceans. Being an oceanographer can mean you study the physical, geological, chemical, or biological features of the ocean. These...