The Rosemount 9930 Magnetic Level Indicator is a low-maintenance alternative to sight glasses and other level indicators. It provides non-invasive level indication while reducing leak points and fugitive emissions. The indicator gives you an easy to see level indication that is visible up to 100 ft (30 m) away. It is ideal for your high-temperature, high-pressure and corrosive applications where you want visual indication of both level and interface. When combined with Emerson’s externally mounted level transmitters and switches, the Rosemount 9930 provides you with a complete, redundant and cost-effective level solution.