K4740 Averaging Flow Sensor Insertion Length 28 in Maximum Media Temperature 400 Degrees F Connection Size 3/16 in 1/4 in Connection Type Hose Barb Series MAFS Wetted Materials Aluminum Accuracy +/-2 Percent of Full Scale Center to Center Distance 1.5 in Flange Length 2 in Flange Width 2 in For Media Clean Air K Factor 0.81 Maximum Air Flow 12 000 fpm Maximum Operating Temperature 400 Degrees F Minimum Air Flow 400 fpm Mounting Hole Diameter 0.218 in Number of Mounting Holes 4