Reciprocating piston flow meter

摘要

A reciprocating piston flow meter for measuring gas flow through the flow meter comprising a hollow precision bore flowtube in a vertical orientation, with a movable piston containing a valve assembly for movement in concert with the piston between one position at or near the bottom end of the flowtube, and an elevated position at or near the upper end of the flowtube. The valve assembly is mechanically activated at each opposite end of the piston stroke to permit the piston to reciprocate between each opposite end in response to the presence of a gas flow.