The IP80 series are impeller type (or paddlewheel)
insertion sensors designed for use with a wide variety
of liquids in pipe sizes 1/2" to 8". Sensors
are available in brass, 316 stainless steel, PVC,
and polypropylene. High-quality jewel bearings and
nickel-bound tungsten carbide shafts are used for
extreme low friction and long life.