FLOW RANGE Wireless Flow Sensor Diameter Operating Range (GPM) Wireless Flow Sensor Diameter Operating Range (GPM) Minimum Suggested Maximum* l/min m3/hr l/min m3/hr 1" (25 mm) 7.6 0.45 64 3.84 1½" (40 mm) 19 1.14 132 8.0 2" (50 mm) 37.8 2.26 208 12.5 3" (80 mm) 106 6.36 450 27.0 4" (100 mm) 129 7.74 750 45.0 Note: * Good design practice dictates the maximum flow not to exceed 1.5 m/sec. Suggested maximum flow is based upon Class 200 IPS plastic pipe.