Waterpilot FMX11 Hydrostatic Level Sensors Endress+Hauser Waterpilot FMX11 Hydrostatic Level Sensors offer a simple and reliable level probe for freshwater applications. These sensors are certified for drinking water applications and can be used in wells, water towers, storage tanks, dams, gauging stations, rivers, and lakes. The FMX11 sensors feature robust construction for durable long-term services, and the compact design is ideal for tight applications. The series provides easy installation, commissioning, and operation with up to ±0.35% accuracy and a temperature range of -10°C to +70°C. Endress+Hauser Waterpilot FMX11 Hydrostatic Level Sensors come with cULus certification and several drinking water approvals, including ACS, KTW, NSF61, and DVGW.