Customer Alerts

CDOM/FDOM WETStar Version Discontinued
December 2015


Affected Instruments: All WETStar Instruments

WET Labs has discontinued the CDOM/FDOM version of the WETStar instrument. This decision is based on factors related to production and low demand for this instrument. We apologize for any inconvenience this has caused our customers and end users. WET Labs will continue to service and
support existing CDOM/FDOM WETStar instruments the foreseeable future.

As an alternative to buying a CDOM/FDOM version of the WETStar instrument, we are recommending that customers consider ECO products as a viable alternative:

  • ECO FLCD + optional flow-through chamber: this alternative gives very similar operational functionality when compared to the CDOM/FDOM version of the WETStar. The ECO instrument provides proven calibration and optical performance with the flow-through implementation of an optional flow-through chamber. Please contact a WET Labs sales associate for more details on the optional flow-through chamber.

For applications which have more sophisticated requirements, multi-channel ECO instruments can be integrated into the flow-through chamber implementation. Please feel free to contact WET Labs to discuss what options best fit your application.

Wet Pluggable Connector Material Issue  and Replacement Plan
November 2015

Issue:
Certain Sea-Bird Scientific sensors have electrical bulkhead connectors that may fail due to a change in material by our supplier.   The bulkhead connectors in question are the MCBH wet-pluggable versions.  This issue does not apply to XSG connectors.

Failure mode:
The failure mode includes corrosion and weakening of the pins, especially the power pin, which may result in pins breaking and getting stuck inside cables.  Bulkhead failure will not cause flooding of the sensor.

Deployment condition:
Failure is most frequently seen in moored applications in shallow/warm water that are connected to external power.

Full information [PDF]

Customer Alert: Chlorophyll-a Scale Factors Shift
July 2011

Affected Instruments:

  • All ECO Chl-a fluorometers built or characterized before January 2011.
  • All WETStar chl-a fluorometers built or characterized before July 2011.

WET Labs characterization testing has revealed that the chlorophyll-a (chl-a) solid proxy used to characterize our ECO and WETStar fluorometers allows a large amount of instrument-to-instrument variability. There are also differences in scaling between WETStar chl-a fluorometers and ECO chl-a fluorometers because of differences in the solid proxy used to characterize these instruments. A new methodology using a liquid proxy has been

implemented to assure stable characterizations between instruments and to match up the ECO and WETStar fluorometers’ corrected data outputs.
 

WET Labs’ Actions 

New Instruments:
 
WET Labs has instituted a new characterization standard solution preparation methodology.
All new ECO and WETStar chl-a fluorometers delivered from this date forward will have
range characteristics as per current specifications and scale factors.
 
Instruments returned for service and characterization:
 
Instruments returned for service and characterization will be characterized using the new
methodology. All instruments returned for servicing will be tuned to the new liquid proxy to decrease instrument-to-instrument variability.
 
In some cases, we will not be able to achieve the previously stated range of an instrument. In these cases, we will strive for the highest resolution with the highest signal-to-noise ratio possible.
 
WET Labs service technicians will incorporate these improvements during service when practical. WET Labs’ term for this service is “retuning.” Accordingly, a serviced instrument may well perform better after retuning than when it was first built. For instruments that are retuned and benefit from either improved resolution or signal-tonoise ratio, WET Labs can provide pre-characterization data to allow you to link your data sets prior to service with your data sets after the instrument is returned to you.
 
Recommended Customer Actions:
 
  • If you characterize your instruments, you do not need to take any action. Continue to use your characterization.
  • If you report scaled or raw data, you should adjust your reported values.
  • For instruments returned for service, you will use the ratio between the previous scale factor and pre-service scale factor. This ratio will cover both the change in the methodology and any change in your instrument between the previous characterization and current service.
  • Use the post-service scale factor going forward.