Photo courtesy of Ocean Networks Canada
When instrumentation is deployed in the water in a stationary position for long periods of time, biofouling will occur. This marine growth causes sensor drift, requiring preventative measures be taken to ensure accurate data. To date, the two most common methods to manage biofouling were mechanical wipers and chemical dosing. Neither is ideal, with the first being unsuitable for sensitive lenses and complex geometries, and the second being harmful to the environment.
AML's biofouling control technology uses ultraviolet light to provide a non-toxic, non-contact solution to prevent marine growth.
A biofouling solution unlike any other method currently on the market, UV•Xchange and Cabled UV prevent biofouling during long-term, in-situ deployments. The LED modules bathe critical surfaces in ultraviolet (UV) light, killing early growth to prevent biofouling, and thus eliminating environmental drift in CTDs and multi-parameter instruments, and keeping critical surfaces of subsea devices clean.
Over 480 days in situ: AML's UV•Xchange preventing fouling on sensors during a technology demonstration at Ocean Network Canada's Folger Pinnacle Observatory. UV•Xchange modules are installed on the left and middle instruments to protect the sensors. The sensors on the instrument on the right are unprotected, and are heavily fouled as a result.