All fouled up?

How do I keep my optical sensors clean underwater? I need to measure turbidity in situ on a long term basis but my sensors are getting fouled and my data is being compromised.

It’s one of the most common water quality measurements. Yet because turbidity sensors are often deployed in estuaries, waste water treatment plants, coastal areas and nutrient rich lakes, bio fouling is a major concern.

But it’s not just bio-fouling

Turbidity sensor with mud

Even assuming we can mitigate some of the biological growth that might obscure the optical window of a turbidity sensor, for example, by using copper anti-fouling tapes and paint, or UV light…..how do we stop sediment deposition, mud, silt and sand from obscuring our sensors and impacting on our data collection program? How do we keep sensors clean and free from debris?

A proven approach

The Hydro-Wiper offers water scientists a reliable and proven method of cleaning turbidity meters and improving data collection. Hydro-Wipers are gentle on lenses. Rather than using a foam wiper blade, which might pick up and hold grit, the Hydro-Wiper uses soft bristles which flick away abrasive particles without scratching the optical window.

Turbidity meter clean optical window

What turbidity meters can we wipe?

Hydro-Wipers can be customized to fit a range of turbidity sensors. Common ones we wipe include the Seapoint, OBS 3+, Greenspan and Ponsel but others are also possible so please contact us for a quote. Zebra-Tech are also agents for Seapoint sensors in New Zealand.

Clean turbidity sensor despite biofouling