ZEBRA-TECH Ltd  is a New-Zealand based manufacturer of the Hydro-Wiper which is an innovative mechanical wiper system designed to be easily fitted to optical turbidity instruments.

The regular gentle brushing action keeps the optical window of the instrument clean of deposits and biofouling. This enables turbidity instruments to be deployed for long periods of time, without the high cost of manually cleaning the instrument, or the high cost of data loss due to the instrument fouling. The Hydro-Wiper is available for the  turbidity instruments OBS3 and OBS3+ of D&A we are distributing and as well the SEAPOINT model.


 

Hydro-Wiper C with OBS 3+

• Highly effective in both marine and fresh water
• Simple to attach
• Embedded microprocessor for intelligent operation control
• High precision on-board clock for accurate wipe interval timing
• Fully self contained; no system integration required
• Rugged design for dependable reliability
• Field proven brush technology
• Simple wipe interval adjustment
• Very long deployment endurance
• Drive shaft slip mechanism prevents gearbox damage
• 30m operating depth as standard

• Wipe interval: 1, 2, 3, 4, 5, 6, 7, 8, 12 or 24 hours
• Wipe interval timer accuracy: +/- 1 minute per year (0 - 40° C)
• Power supply: 6 x AA Alkaline batteries
• Deployment endurance: More than 4 months with a 2 hour wipe interval
• Construction: Stainless steel, acetal
• Depth rating: 30m (option 100M)
• Cable: EPDM jacketed cable between the wiper and battery housing (1 meter standard length, option longer).
• Cable entry: Strain relieved cable glands with 'O' ring sealed back-insert.