Fisher Controls International LLC

Daniel Industries, Inc.

Other

Daniel Measurement and Control, Inc.

Dennis Gene Sickels

Richard Joseph Vanderah

Donald Paul Pepperling

John W Duffy

Gary L Scott

William J Bonzer

Jon B Milliken

David C Sanderson

Ralph W Zeigler

An electronics module comprises an electronics assembly having a first connector and a second connector. The first and second connectors are disposed on opposite ends of the electronics assembly. A case encloses the electronics assembly. The first connector is accessible through a first side of the case and the second connector is accessible through a second side of the case. A locking tab is disposed on the case and is biased to an extended position. A sliding member is slidably coupled to the case and is operable to move the locking tab to a retracted position.

Electronics module retention system

Methods and apparatus for sensing a gauge pressure use a pressure gauge pressure sensor that includes a housing and a gauge pressure sensing element having a first pressure inlet and a second pressure inlet. The first pressure inlet is associated with a pressure to be measured and the second pressure inlet is associated with an atmospheric pressure. A flame arrestor disposed within the sensor housing fluidly couples the second pressure inlet to an internal portion of an explosion proof device.

Gauge pressure sensor for hazardous applications

The specification discloses a system for mounting a communications antenna and a solar panel on an explosion-proof housing that does not require the use of conduit ports of the explosion-proof housing. More particularly, a mast couples to the housing by way of a prescribed number of threads, the mast having a circular cross-section and an internal cavity extending along its axis. Wires extending from inside the explosion-proof housing through the mast couple to the radio antenna and the solar panel. The void within the internal diameter of the mast not occupied by the wires for the radio and solar panel is filled with a sealing compound rated for explosive environments.

Solar panel and antenna mounted on an explosion-proof enclosure

A controller of the type used in process control includes a plurality of modular I/O units. The I/O units includes I/O circuits which may be of four basic types: digital input circuits, digital output circuit, analog input circuits and analog output circuits. Each of the I/O circuits has a code generator that generates a binary code indicating the type of I/O circuit. The controller is microprocessor-controlled and periodically communicates with the I/O circuits and determines the type of each I/O unit based upon the binary code. The I/O units may be temperature-compensated based upon the temperature within the housing of the controller, and other integrity checks may be performed on the I/O units. The controller also has a change module routine which allows the I/O units to be installed or removed during operation of the controller.

Process controller with interchangeable individual I/O units

A pressure relief diaphragm type regulator valve includes a velocity boost body having an annular-shaped wrap-around pitot tube communicating with the vena contracta of a flowpath. The pressure at the vena contracta is communicated to the diaphragm by a small registration orifice in the boost body. The boost body defines a large relief orifice open to the annular pitot tube, but normally closed off from the diaphragm by a flapper. Under a rapid excess pressure condition, the flapper uncovers the relief orifice and large volume flow is permitted to the diaphragm.

Velocity boost body with wrap-around pitot tube

A rolling diaphragm regulator valve is affixed in a globe type valve body and includes a non-stretchable fabric reinforced liner for covering and uncovering, by rolling action in response to changes in pressure in a control chamber, a plurality of slots in a baffle positioned between the valve body inlet and outlet. An axially movable spring-biased nose cone, mounted behind the diaphragm, provides a surface over which the diaphragm is draped for controlling substantially all movement of the diaphragm. A travel indicator is operable by movement of the nose cone to provide a visual indication of the position of the valve.

Growing community of inventors

Marshalltown, IA, United States of America

Dennis Gene Sickels