Submersible level probe with ceramic measuring cell The OPTIBAR LC 1010 submersible level probe has been developed for continuous level measurement of liquids in the water and wastewater industry.The high overload resistant ceramic-capacitive measuring diaphragm is safe to install and easy to clean during operation. Together with the robust 316L housing and the highly corrosion resistant TPE cable, this level probe can be used in a variety of ways.