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....
Service
How should I store the ISFET pH probe on my Navis BGC float? What should I do before testing and deploying it?
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...
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...
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 SUNA nitrate sensor is not transmitting or storing valid nitrate concentration data in high sediment, high turbidity, low light transmission environments, or freshwater inrush events. What can I do to mitigate this?
SUNAs ordered with the 5mm path length coupler as a factory option will perform much better in low light transmission waters due to the shorter length the light needs to travel leading to less absorption. Equipping your SUNA with the factory bio-wiper option will also...
How can I determine if an SBE9 or SBE9plus CTD is compatible with a specific SBE11 or SBE11plus deck box?
There are several considerations when determining whether the deck box and CTD underwater unit will be compatible. (1) In most cases (with the exception being (2), below), instruments with the "-plus" designation are compatible with each other, but the "-plus"...
When should the SUNA (V1 or V2) be sent in for service to get the lamp replaced?
When your max lamp counts drop below 30,000 during the self test and cannot recover with cleaning, you can send the lamp in for inspection. If your lamp time remaining is less than 25% then it is best to send the SUNA in for a lamp replacement. We will automatically...
When should the SUNA (V1 or V2) be sent in for service to get the lamp replaced?
When your max lamp counts drop below 30,000 during the self test and cannot recover with cleaning, you can send the lamp in for inspection. If your lamp time remaining is less than 25% then it is best to send the SUNA in for a lamp replacement. We will automatically...
What is an Anti-Foulant Device? Does it affect the conductivity cell calibration? How often should I replace it? Does it require special handling?
The Anti-Foulant Device is an expendable device that is installed on each end of the conductivity cell, so that any water that enters the cell is treated. Anti-Foulant Devices are typically used with moored instruments (SBE 16, 16plus, 16plus-IM, 16plus V2, 16plus-IM...
Does Sea-Bird have any calibration/service centers outside of the United States?
Sea-Bird opened a calibration/service center in Kempten, Germany in 2011, providing duty-free servicing for EU customers. The dedicated technical support staff and calibration technicians were extensively trained by Sea-Bird experts. Calibration cross-referencing...
Featured Posts
Scripps Technical Forum | AC-S: The Telescope Into the Rainbow of Ocean Life
Scripps Technical Forum Time: Thursday, April 06, 2023 | 12:00 PM to 1:00 PM Location: Hydraulics Lab Mezzanine Sea-Bird Scientific is grateful for the opportunity to present at a Technical Forum to the Scripps Institute of Oceanography community. In this session,...
February 2023 Newsletter
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Announcing the NEW LED AC-S
We are more than ecstatic to announce the release of the NEW LED AC-S Spectral Absorption and Attenuation Sensor. It is the first of its kind, and a standalone transmissometer in the market. The AC-S provides in-situ optical data of beam transmission and absorption...