Weber Sensors, 4320.12M/12, Flow-Captor type 4320.12M/12- Measuring Range 0-20cm/s to 0-300cm/s in water systems up to 30 bar pressure. IP 67 / NEMA 4X protection; 316 stainless steel sensor tube 12mm diameter. PNP n.c. (opener), set point cont. adjustable, 18-30...