The HydroShutter-HR is a motorized shutter designed to be attached to HydroRad hyperspectral radiometer sensors to prevent bio-fouling during long deployments.� For this purpose a copper blade is attached to the motor shaft, and the HydroRad powers the motor at appropriate times to uncover or cover its sensors as it collects data or sleeps.

Like the HydroShutter-HS, the HydroShutter-HR could be used as a submersible actuator for other applications.� When voltage is applied, the shaft rotates in a direction determined by the voltage polarity, until it reaches the motion limit set at assembly time.� An electronic circuit detects the limits of motion and cuts off power to the motor when a limit is reached.

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• Rectangular, for easy mounting.
• Low power requirements
• Rugged construction
• Pure copper shutter
• Acetal plastic case

• HydroRad fiber optic collectors
• Underwater cameras
• Moorings
• In-pipe water monitoring