FLUID FILTRATION SYSTEM WITH FLUID FLOW METER

摘要

A modular turbine casing assembly having an upstream casing element, a downstream casing element and a turbine located between the upstream and downstream casing elements. Each of the upstream and downstream casing elements have cylindrical walls defining an internal shoulder at an upstream end and a co-operating external shoulder at a downstream end so that the upstrea m and downstream casing elements may be stacked. Each of the upstream and downstream elements also has a turbine locator consisting of a central hub a nd a number of radially extending ribs coupling the hub to a circumferential rim adjacent to the cylindrical wall. Each hub has a spindle extending toward the upstrea m end of the casing element with an opposing dimple exposed to the downstream end. The turbine has a central hub and a number of radially extending turbine blades coupling the hub to a peripheral collar. The central hub has an axially extending spindle on an upstream side and a recess on a downstream side adapted to co- operate with the dimple of the upstream casing element and spindle of the downstream casing element. The turbine rotates freely between the upstream a nd downstream casing elements and is adapted to be magnetized so that rotation of the turbine can be monitored electronically.