Fisher Controls International LLC

Ipg Photonics Corporation

Mark Byer

Michael Wildie McCarty

Douglas Paul Gethmann

James Leroy Gossett

Manuel Martinez

Daniel Swanbeck

Example field instrument temperature apparatus and methods for affecting or regulating a temperature of a field instrument are disclosed. An example apparatus includes a vortex tube having an inlet to receive a fluid, a first outlet to dispense a first portion of the fluid at a first temperature and a second outlet to dispense a second portion of the fluid at a second temperature, the second temperature being greater than the first temperature. The example apparatus also includes a first passageway fluidly coupled to the first outlet to direct the first portion of the fluid to an electronic device in a process control system to affect a temperature of the device.

Field instrument temperature apparatus and related methods

A fluid pressure reduction device for use with a fluid valve control member movable through the device. The pressure reduction device is formed of a plurality of stacked disks having an outer perimeter and an inner perimeter defined by a hollow center aligned along a longitudinal axis. The disks are formed in a cage assembly for receiving the fluid valve control member within the hollow center along the inner perimeter. The stacked disks include a plurality of longitudinal channels formed in the disk around the inner perimeter. Guide members formed of a metal harder or at least with greater wear resistant characteristics than the disks are provided in each of the longitudinal channels. The guide members are adapted to the inner perimeter for guiding the fluid valve control member in movements through the hollow center for reducing wear on the inner perimeter. It is preferred that the guide members comprise longitudinal rods inserted within each channel. Alternatively, longitudinal weld bead strips can be welded within the channels.

Fluid pressure reduction device with integral guides

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Marshalltown, IA, United States of America

Mark Byer