Fisher Controls International LLC

Rosemount Inc.

Ronald Francis Hurd

George Wayne Gassman

Joel David Vanderaa

Christina A Grunig

Steven B Paullus

Carl Gene Scafferi

Kenneth William Junk

Michel Ken Lovell

Brian Lee Westfield

Chad Michael McGuire

Curt Galbreath

Mike Fontaine

Chad M Mcguire

Steven Burl Paullus

George W Gassman

Wear-resistant electro-pneumatic converters are disclosed. An electro-pneumatic converter includes a body including an axial passageway extending between a first opening and a second opening, the first opening associated with a supply port, the supply port to receive pressurized fluid from a pressure supply source, a solenoid disposed within the axial passageway, an armature including a first side and a second side opposite the first side, the second side facing the solenoid, the armature movable between a first position and a second position, the pressurized fluid blocked from flowing through the output port when the armature is in the first position, the pressurized fluid to flow through the output port when the armature is in the second position, and a spring coupled to the first side of the armature, the spring to bias the armature toward the first position.

Wear-resistant electro-pneumatic converters

Digital valve controllers and seal washer assemblies for use with digital valve controllers include a seal washer assembly. The seal washer assembly includes a body. The body has a bore. The seal washer assembly includes a flange. The flange is coupled to the body and includes a passage, a face-seal groove, and an exterior-seal groove. The seal washer assembly includes a face seal. The face seal is disposed within the face-seal groove. The seal washer assembly includes an exterior seal. The exterior seal is disposed within the exterior-seal groove.

Digital valve controllers and seal washer assemblies for use with digital valve controllers

A wireless process communication adapter is provided. The adapter includes a housing having a plurality of openings. An end cap is coupled to a first opening of the plurality of openings. A field device coupling is disposed at the second of the plurality of openings. The housing, end cap and field device coupling define a chamber therein. At least one circuit board is disposed within the chamber, the circuit board has wireless communication circuitry disposed thereon and is coupleable to a field device through the field device coupling. In one aspect, substantially all remaining volume in the chamber is filled with a solid material. In another aspect, an explosion-proof barrier is provided in the field device coupling. Combinations of the aspects are also provided.

Wireless communication adapter for field devices

A process device wireless adapter includes a wireless communications module, a metallic housing, and an antenna. The wireless communications module is configured to communicatively couple to a process device and to a wireless receiver. The metallic housing surrounds the wireless communication module and has a first end and a second end. The first end is configured to attach to the process device. In one embodiment, a metallic shield contacts the housing second end such that the metallic shield and the housing form a substantially continuous conductive surface. The antenna is communicatively coupled to the wireless communication module and separated from the wireless communication module by the metallic shield. Preferably, the wireless communications module illustratively includes a printed circuit board that has a length that is greater than its width.

Form factor and electromagnetic interference protection for process device wireless adapters

Apparatus to determine the position of a movable member of an actuator operating a valve assembly are disclosed. The movable member of the actuator displaces an actuation arm of a position sensor such that relative displacement occurs between a magnetic flux source and a magnetic flux sensor of the position sensor.

Apparatus to determine the position of an actuator

A non-contacting position sensor detects relative displacement between two objects. A magnetic flux source is provided by a plurality of discrete magnets selectively determined to produce a highly configurable flux source that is easily adapted to rotary or rectilinear displacement. The interaction of the individual flux fields generated by the discrete magnets is controlled to produce both linear and non-linear relationships with respect to changes in displacement. A flux-gathering pole piece is dimensionally optimized to integrate the plurality of individual flux fields directed to a magnetic sensor.

Growing community of inventors

Marshalltown, IA, United States of America

Ronald Francis Hurd