Yes, provided the SeaFETTM sensing elements remain ice-free, the instrument works across the broad temperature range of 0 to 50 deg C. The original SeaFETTM prototypes developed at MBARI and SCRIPPS were deployed extensively in the Antarctic for several...
For SBE 4 conductivity calibrations, Sea-Bird uses natural seawater that has been carefully collected, stored, UV irradiated, and filtered. Artificial seawater is not adequate if calibration errors are to be kept below 0.010 psu. Note: SBE 4 is the...
The difference between downcast and upcast is most likely related to package wake. When the CTD is mounted under a large water sampler, the variation can be on the order of 5 to 8 meters. This is due to the shadowing of the CTD sensors by the water sampler.
One of the reasons that this is not a simple question is that there are several factors to take into consideration regarding the error margin for practical salinity measurements. Salinity itself is a derived measurement from temperature, conductivity, and pressure, so...
The FIRe System measures changes in chlorophyll fluorescence that occur during a short (100 - 400 ?s) but intense (> 20,000 ?mol photons m-2 s-1) flash of light whereas the PAM approach measures the fluorescence induced by a weak modulated light source while using...
Sea-Bird Scientific has developed cosine collectors that are specifically designed to optimize performance in the intended media of operation (air or water). So in water irradiance sensors have cosine collectors that provide an excellent response in water but not in...
Sea-Bird Scientific multispectral 500 series radiometers measure light at each fixed wavelength with an interference filter/detector assembly. The analog output of each detector is amplified and digitized. The amplification stage and noise filtering is...
The acquisition of conductivity/salinity data alongside the SeaFETTM is recommended. The acquisition of temperature data is not necessary as the SeaFETTM performs temperature measurements. Typically, conductivity and temperature measurements are combined in...
The SUNA V2 determines nitrate concentrations from the shape of the UV absorption curve. The least squares curve fitting algorithm uses calibrated extinction coefficients for nitrate and bromide (strong absorbing species in salt water) to calculate the concentration...
Instrument specific calibrations are more accurate and correspond to the published accuracy specifications. The accuracy of the class based calibration is estimated to be 2.2 uM +/- 20%.
We are excited to celebrate International Women in Engineering Day on June 23. This day is meant to celebrate women in STEM, and provide an opportunity to highlight women in engineering fields, who are still very much under-represented. In fact, according to the...
Sea-Bird Scientific is excited to announce a change in our service pricing model. Through this change, we can significantly improve service turnaround times, and our on-time delivery to you. Please see our below formal announcement: Have other questions? Please...
We are excited to celebrate Pride Month in 2023 with our supporters, partners, and associates. Pride is a special month to us, as it gives us an opportunity to reflect on our commitment and support to the LGBTQIA+ community, something that is integral to the culture...