The Gestra NRG16-11S is a high-integrity level electrode designed for reliable water level detection in steam boilers and pressurized hot water installations. It functions as a water level limiter for both high (HW) and low (LW) water levels. The NRG16-11S is built for safety-critical applications, operating on the principle of conductivity measurement to signal the presence of water. Its robust construction ensures durability and long service life in demanding industrial environments. This electrode is designed to be used in conjunction with Gestra level switches (such as NRS 1-51, NRS 1-50) to form a complete, self-monitoring safety system compliant with relevant industry standards, including SIL 3 requirements.