The pH sensor will be shipped dry but was pre-conditioned in seawater (generally from Pacific Ocean waters near Hawaii). While conditioning and evaluating the pH sensor, only expose it filtered, sterilized natural seawater. Do not use seawater CRMs (Certified...
FAQs
How will cell fouling / contamination affect the conductivity / salinity data of a Sea-bird CTD?
Cells that have been contaminated with foreign material generally read low of the actual conductivity. Your zero (in air) conductivity reading is generally unaffected. The conductivity error due to fouling will generally be proportional to the conductivity value....
What maintenance can a user perform in the field on my ECO sensor’s wiper and optics face?
The primary maintenance procedures that are outlined in the manual are for the bio-wiper (shutter) installation, the internal battery replacement and the bulkhead connector inspection. The shutter replacement is not always necessary; however, having the copper shutter...
What theory is the temperature / salinity correction for SUNA based on? Does this correction only work in natural seawater?
The temperature and salinity correction for the SUNA can be traced to the experiment outlined in Sakamoto et al. 2009, which is the T/S correction our UCI-based SUNA software uses in post-processing only. Absorption of UV light in seawater is dominated by dissolved...
How can I determine if my SeaFET V2 is using internal (battery) or or an external power source?
The SeaFET V2 has separate internal power terminals for the alkaline cells vs. an external voltage source. If a voltage is present on the external power input and above a nominal minimum input voltage, the input voltage from this source will be boosted to 15.5 volts...
Can I collect vertical profile data with my SeaFET V2, SeapHOx V2, or Deep SeapHOx V2 pH sensor?
The SeaFET and SeapHOx systems are designed to sample at a fixed depth. If you want to run discreet samples at depth intervals, you will need to find a way to move the system to a specific depth before each sample interval and stop the descent / ascent for the entire...
Why do some older CTDs have an RTC calibration in addition to the temperature, conductivity, and pressure calibrations?
An RTC (real time clock) is an electronic component which maintains an accurate time reference for the CTD. In the past, clock chips could be periodically calibrated to account for slow drift. As of the early 2000s, Sea-bird has been using components with improved...
My Deep SUNA V2 has the optional APF relay feature. What voltage level is recommended to activate the relay? When should I apply power to the relay, and for how long?
The nominal control voltage for the relay is 12 VDC. However, between 5 - 30 VDC will work, applied to pin 4 relative to the ground pin 2 on the Deep SUNA V2. The voltage can be applied to the relay any time after external power is applied to the instrument for a...
When changing settings on my SBE19plusV2 or SBE16plusV2 SeaCAT, I receive the following message: “this command will change the scan length and/or initialize logging repeat the command to verify.” What does this mean?
Changing various settings, like the logging mode (moored or profile) or external sensor input channels enabled, will change the bit length of the scans stored in memory. For this reason, the previously stored samples in memory will no longer be interpretable in the...
When changing settings on my SBE19plusV2 or SBE16plusV2 SeaCAT, I receive the following message: “this command will change the scan length and/or initialize logging repeat the command to verify.” What does this mean?
Changing various settings, like the logging mode (moored or profile) or external sensor input channels enabled, will change the bit length of the scans stored in memory. For this reason, the previously stored samples in memory will no longer be interpretable in the...
Featured Posts
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...
November 2023 Newsletter
Come See Us at AGU in San Francisco! Sea-Bird Scientific is excited to exhibit at the upcoming AGU Fall Meeting taking place in San Francisco, California, from December 11 – 15, 2023. Please come see members of our team at booth #604 to get answers to your...