Dieterich Standard, Inc.

Rosemount Inc.

Stephen Arthur Ifft

John Everett Garnett

David Eugene Wiklund

Marcos A V Peluso

John Henry Stehle

Paul Timothy Deegan

Charles Theodore Orleskie

A differential pressure fluid flow meter element for insertion between the connecting flanges of conduit sections of a fluid carrying conduit includes a flat orifice plate having a fluid contacting region for positioning in a flow of fluid through the conduit and a handle extending outward from an outer portion of the fluid contacting region. The flat orifice plate includes at least one pressure port formed in the fluid contacting region of the plate, and at least one impulse line channel formed in the flat orifice plate and extending from one of the at least one pressure port through the handle to a corresponding transmitter interface port. A plurality of apertures formed in the handle and disposed and arranged relative to the at least one transmitter interface port allow mounting of the process variable transmitter directly to the paddle style orifice plate handle, with the transmitter substantially perpendicular to a plane of the handle.

Paddle style orifice plate with integral pressure ports

A retractable flow conditioner that includes a body adapted for insertion into a fluid in a confined conduit upstream of a differential pressure measuring probe. The body has at least one flow conditioning element. The retractable flow conditioner also includes a mounting assembly attached to the body. The mounting assembly is configured to retractably mount the body into the confined conduit.

Retractable flow conditioner

A process flow device that includes a self-averaging orifice plate type of primary flow element with a high pressure tap located on or incorporated into its upstream surface, and a low pressure tap located on or incorporated into its downstream surface, for measuring, by a differential pressure process, the volumetric rate of fluid flow at a point in a fluid carrying conduit where the velocity profile of the fluid is asymmetric with respect to the longitudinal axis of the conduit. The improved pressure tap configuration consists of two fluid conduits, one carried by each of the downstream and upstream faces of the orifice plate, establishing fluid communication between openings in the downstream and upstream faces of the orifice plate and their respective terminal pressure ports. Location of the pressure taps on the faces of the orifice plate in this manner allows for increased resolution of the pressure signals by minimizing the effects of upstream pipe flow disturbances on pressure taps used in conjunction with conditioning orifice plate primary flow elements, especially those with higher beta ratios.

Locating of pressure taps on face of orifice plate device

A device comprises a sensor tube for placement in a process flow and a flow-modifying element. The flow-modifying element is formed on the sensor tube, in order to reduce flow-induced vibrations by reducing coherent vortex shedding in the process flow.

Sensor tube with reduced coherent vortex shedding

An element of an averaging orifice plate fluid flow meter for measuring the volumetric rate of fluid flow in a conduit having an interior circumference for carrying a flow of fluid comprising, a planar flow impedance plate for disposition transversely across the interior of the conduit and perpendicular to the fluid flow, a plurality of spaced apart orifices disposed in the plate where the profile of each orifice is a segment of a circle on an arc where the arc is coincident with a portion of the interior circumference of the conduit.

Conditioning orifice plate with pipe wall passages

Apparatus and method for strain gage measurement of differential pressure across a body inserted into a flowing fluid where the body includes an exterior upstream facing portion, an exterior downstream facing portion and interior surfaces. At least one first electrically resistive strain gage having connecting terminals is disposed on one or more of the interior surfaces of the upstream facing portion and at least one second electrically resistive strain gage having connecting terminals is disposed on one or more of the interior surfaces of the downstream facing portion. The first and second strain gages are electrically connected to form the legs of a full Wheatstone Bridge, the electrical output of which is directly related to the differential pressure across the inserted body.

Growing community of inventors

Longmont, CO, United States of America

Stephen Arthur Ifft