The Gestra NRG 16-11S is a high-integrity compact level electrode designed for precise water level detection in steam boilers, pressurized hot water installations, condensate tanks, and feedwater systems. It operates on the conductive measurement principle and is used as a water level limiter (for high or low water levels) and a level controller for pump management. Its robust construction ensures reliable performance and safety in high-pressure and high-temperature environments. The NRG 16-11S is designed for use with Gestra level controllers (e.g., NRS 1-…) and level limiters (e.g., NRR 1-…), forming a complete, type-approved system for efficient and safe plant operation.