The Gestra NRG16-50S is a high-integrity capacitance level electrode designed for detecting high water levels in steam boilers and pressurized hot water vessels. It functions as a high-level alarm, providing a critical safety function to prevent overfilling. Operating on the capacitance measurement principle, the NRG16-50S detects the change in capacitance when its measuring tip is immersed in a conductive liquid like water. This triggers a switching signal. Built for demanding industrial environments, it features robust stainless steel construction and is suitable for high-pressure applications. The NRG16-50S is typically used in conjunction with a level switch (e.g., NRS 1-50) to form a complete, SIL-certified safety system, ensuring reliable operation and plant safety.