Slop oil vessels contain a mixture of dirty hydrocarbons and water. The water is usually sent to a wastewater facility and the oil can often be re-used as feedstock or product in the plant. Deposits and sticky materials are likely to be present and density and other fluid properties can vary. To be able to measure interface, a guided wave radar is the recommended solution with vibrating fork switches for overfill prevention and pump dry run protection.
The Rosemount 2120 Level Switch provides easy to install, reliable level detection and control. 3 rdparty IEC61508 (SIL2) safety and hygienic certification with choice of outputs makes it suitable for a wide range of applications. It has no moving parts, needs no calibration and is virtually unaffected by process conditions. Adjustable switching delay prevents false switching in turbulent applications. Understand what is going on with your process- the visible heartbeat LED provides device status and health, and magnetic test point provides an easy-to-use functional test.