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WETStar Chlorophyll Fluorometer

WETStar

The WETStar fluorometer provides breakthrough performance for detecting various types of fluorescence. It uses a central axial optical tube to provide efficient signal output.
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The meter has a unique flow tube design that lends itself to both pump-through and flow-through operation. It's power input of 7–15 VDC and 0–5 VDC analog output allow it to easily mate with existing CTD packages.

These miniature, low cost, low power optical instruments provide comparable performance to other fluorometers at a fraction of their cost, power requirements, and size. WETStar employs a novel optical flow tube design that lends itself to both pumpthrough and flow-through operation. It is easily mated with existing CTD packages and available with digital output.

 

Chlorophyll-a

Chlorophyll-a fluorescence is an indicator of active phytoplankton biomass and chlorophyll concentrations. This measurement is used for tracking biological variability and abundance in the water column.
 

Colored Dissolved Organic Matter

Created from decayed biomass, CDOM contributes to coloration of both fresh and marine waters.

 

Uranine (fluorescein) & Rhodamine

Used as dye to study hydraulic connections and water transport mechanisms.
 

Phycoerythrin

Allows measurement of the red pigment in cyanobacteria.

 

MECHANICAL

Diameter6.9 cm
Length17.1 cm
Weight in air0.8 kg
Weight in water0.1 kg

ELECTRICAL

Input voltage7–15 VDC
Output, digital0–4095 counts
Output, analog0–5 V
Current draw, digital80 mA
Current draw, analog 40 mA
Response time, digital0.125 sec
Response time, analog0.17 sec
ConnectorMCBH6MP

ENVIRONMENTAL

Temperature range0 to 30 deg C
Depth rating 600 m

OPTICAL

Chlorophyll-a
ex/em: 460/695 nm
Sensitivity0.03 µg/I
Range0.03-75 µg/L
CDOM
ex/em: 370/460 nm
Sensitivity0.100 ppb QSD
Ranges0-100, 0-250 ppb
Uranine
ex/em: 485/530 nm
Sensitivity1 µg/I
Range0-4000 µg/I
Rhodamine
ex/em: 470/590 nm
Phycoerythrin
ex/em: 525/575 nm
Linearity (all)99% R2

 

Specifications subject to change without notice.

From Ross Timmerman from University of Hawaii; High resolution vertical profiler: SBE 25, 4c, 29, 3, 43; WetLabs wetstar and DH4; TAPS
From Ross Timmerman from University of Hawaii
Product Brochure

WETStar Brochure

Monday, June 18, 2012
WETStar-28Jun2011.pdf
Product Manual

WETStar Manual

Tuesday, June 19, 2012
WetStar-Rev-T-Manual.pdf
Technical Note

Instrument Voltage Ranges (in VDC)

Thursday, June 21, 2012
Instrument-Input-Voltage-Ranges.pdf

What should I use to lubricate the contacts on bulkhead connectors?

WET Labs recommends keeping the connectors on your meter lubricated using a good quality silicone spray lubricant, such as 3M Silicone Spray or Loctite 8021 spray. These can be purchased at your local hardware store. Avoid silicone grease. It is messy and attracts contaminants.

Do not use WD-40. It will destroy connectors.

What should I use to lubricate bulkhead connectors?

WET Labs recommends keeping the connectors on your meter lubricated using a good quality silicone spray lubricant, such as 3M Silicone Spray or Loctite 8021 spray. These can be purchased at your local hardware store. Avoid silicone grease. It is messy and attracts contaminants. 

Do not use WD-40. It will destroy connectors.

Do you want WET Labs to review your data?

In order for data questions to be answered in an efficient manner, WET Labs requests:

-  The serial number of the instrument data in question. The most current calibration information
can be verified and the instrument settings upon delivery can be checked.


-  Description of the deployment configuration. Questions to consider:

  •   What are the current instrument settings?
  •   What is the instrument orientation?
  •   Are there possible obstructions?
  •   Is it being used in a mooring, a profiler, or being towed?
  •   What were the deployment date and geographical location?
  •   How far into the deployment was the problem seen?
  •   What power supply and cabling are being used?
  •   What was the instrument condition during the last field service or retrieval?
  •   Do you have any pictures?


-  Raw data files of the physical data in question

  •   examples of good raw data.
  •   examples of questionable raw data .


-  Information about how the raw data was processed.