More information about how a Flow meter works in this link.
The FTB2000 series Hall-effect turbine flowrate sensor is ideal for OEM applications involving low flow liquid monitoring. The low cost, coupled with 1/2 % repeatability, makes it an ideal candidate for replacing dispensing timer systems. Unlike existing timing systems, turbine technology is not influenced by changes in system pressure caused by aging filters. The sensor’s standard power and output specifications make it easy to retrofit to existing controllers.
SPECIFICATIONS: Wetted Materials Accuracy: ±3% of reading Repeatability: 0.5% of full scale Body: Nylon 12 Turbine: Nylon 12 Composite Bearings: PTFE/15% Graphite Operating Pressure: 13.7 bar Operating Temperature: -20 to 100°C Viscosity: 32 to 81 SSU (.8 to 16 centistokes) Filter: <50 microns Input Power: 5 to 24 Vdc @ 8 mA Output: NPN Sinking Open Collector @ 50 mA Maximum (1 to 2.2 K Ohm Pull-Up Resistor Required) (Hz Output) Electrical Connection:FTBMC2005 model: 1m Cable. IP65 rated. FTB Models: Spade Terminals 2.8/6.3 x 0.8 mm (0.110/.248 x 0.031") Inlet/Outlet Ports: FTBMC2005 model: 3/8" BSPP (G 3/8) Male FTB Models: 3/8" NPT Male
† All amounts shown in EUR, GBP, or USD Note: Comes complete with operator's manual.