Sounding scale with ultrasonic, sensor "honesty"

Designed for measuring and reading of ullage by an ultrasonic sensor installed at the end of sounding measuring tape. It detects the liquid level without being obstructed by floating bubbles, and measures accurate ullage to solve “cappuccino bunker effect” during bunkering. It is portable, significantly saving bunker measuring time, and this device can measure not only fuel oil but also colorless liquids such as Marine Gas Oil (MGO), ballast water and bilge. Available in stainless steel & brass covered sensor as non spark type on request.