| 摘要 |
588619 A fluid flow meter comprising an outer casing having an inlet (11) and outlet (13) and flow connections adapted to be connected so that in operation fluid to be measured flows through the casing, and a mechanical flow measuring unit (12) disposed in the casing to measure the flow through the casing. The casing is of plastics material and in at least two parts (30, 32) which are permanently bonded or connected together (at 34, 36) to enclose the measuring unit. At least one of the casing parts bears upon the housing of the measuring means to seal the housing against the outer casing to resist flow leakage past the measuring means, thereby forming a sealable flow path from the inlet, through the measuring means housing, to an outlet. |
