Antifouling Paints; Applying Antifouling Paints - Teledyne WORKHORSE Operation Manual

May 2015
The following options can help reduce biofouling:
•
Coat the entire H-ADCP with antifouling paint. Make sure that the paint is applied in an even
coat over the transducer faces and inductive modem (see
•
Apply a thin coat (1 mm, 0.039 in.) of either a 50:50 mix of chili powder and petroleum jelly or
chili powder and silicone grease to the transducer faces. The chili powder should be the hottest
that can be found. Water flowing across the transducers will wash this mix away over time. The
silicone mixture tends to last longer.
•
If using antifouling grease, remove the grease immediately after recovering the H-ADCP from its
deployment. Remove the grease with soapy water. Be sure to wear protective gloves and a face
shield.
If using antifouling grease, remove it immediately after recovering the H-ADCP.
Antifouling grease is toxic. Read the product safety data sheet before using the grease. Wear
gloves and a face shield when applying the grease. If the skin comes in contact with the grease,
immediately wash the affected area with warm, soapy water.
All U.S. coastal states prohibit the use of tributyl-tins on boat hulls. The European Economic
Commission has released a draft directive that would prohibit the use of many organo-tins after
July 1989. We strongly recommend you obey your local laws.

Antifouling Paints

You can use almost any EPA approved anti-fouling paint on the housing or the urethane transducer faces.
Contact the antifouling paint manufacturer for preparation and application procedures for this and other
antifoulant paints. Interlux is one source of antifouling paint. Contacting this company is done with the
knowledge that Teledyne RD Instruments is not recommending them, but only offering this as a source
for the anti-fouling paint.
Manufacturer
Courtalds Finishes
Interlux brand paints
Do not use antifouling paints that contain cuprous oxide on aluminum housings as it will cause
galvanic corrosion.

Applying Antifouling Paints

The following tips are only general recommendations. Always follow the anti-fouling paint manufacturer's
instructions on how to apply the anti-fouling paint.
TRDI recommends that any antifouling coating should be applied in as thin a layer as possible. It
should be understood that applying a coating may reduce the measurement range of the H-
ADCP (though it will not affect its accuracy in the measurable range).
As originally manufactured, the transducer faces have a smooth surface which makes it
inhospitable for most biofouling to develop. Preserving this smooth surface is an effective way
to prevent heavy biogrowth on the transducer faces. However, if an antifouling coating is
desired on the transducer faces, then the faces must be lightly abraded to allow for the
antifouling coating to adhere. As a rule, the surface must be kept smooth unless an antifouling
coating will be applied.
Page 56
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Contact
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WorkHorse H-ADCP Operation Manual
Applying Antifouling Paints).