Abstract: An apparatus for measuring humidity of air flowing in a conduit includes a probe comprising a probe arm configured to be inserted into the conduit. A humidity sensor element is disposed at a distal end of the probe arm. A filter is connectable with the probe arm to enclose the humidity sensor element. The filter includes a filter housing that defines an interior in which the humidity sensor element is disposed, and an opening that provides fluid communication between the interior and exterior of the filter housing. The filter further includes a filter membrane that spans the opening. The filter membrane is constructed of a hydrophobic material that allows air and water vapor to pass freely through its structure from the exterior to the interior, and that blocks liquid water and particulates from passing through its structure from the exterior to the interior.

Abstract: Embodiments described herein relate to a flow meter assembly. The inline flow meter assembly includes a housing, an elongated flow member, and a piston. The housing includes a fluid passage. The elongated flow member has a shaft portion and an opposite fluid flow portion. The fluid flow portion has an outer peripheral surface. The shaft portion is coupled to the housing. The piston has a plate. The plate has a plate orifice. The piston and the plate move axially between a no flow position where the outer peripheral surface of the fluid flow portion is engaged with the plate orifice to prevent a fluid flow and a full flow position where the outer peripheral surface of the fluid flow portion is disengaged with the plate orifice such that the fluid flow enters the plate orifice and passes through the fluid passage in the axial direction of movement of the piston.

Abstract: Embodiments described herein are generally directed to a venturi valve. The venture valve includes an inlet; an outlet opposite of the inlet; a passage, a primary orifice, and an insert. The passage is positioned between the inlet and the outlet and fluidly coupling the inlet to the outlet. The primary orifice is positioned between the inlet and the outlet and in fluid communication with the passage such that the primary orifice permits fluid to enter the passage. The insert is positioned between the inlet and the outlet, the insert configured to enclose at least a portion of the passage.