Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a piston and supply seal rings, wherein the diameter of the piston is at least half of the sum of the diameters of the supply seal rings to reduce deadband and increase sensitivity. In another embodiment, the pressure regulator has a maximum deadband of less than 200 pounds per square inch when coupled to a supply pressure of at least 1000 pounds per square inch. Other embodiments related to pressure regulators are also provided.
Abstract:
A process control loop monitor includes a housing (50) configured to mount in the field of an industrial process. A loop interface circuit (62) couples to a process control loop (18) and receives data from the process control loop (18). A memory (64) stores data received by the loop interface circuit (62) from the process control loop (18).
Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a housing having a supply port for receiving a pressurized medium within the housing and an outlet port for outputting the pressurized medium to a downstream device. The housing of this embodiment also includes a vent port for venting the pressurized medium from the housing. The pressure regulator of this embodiment further includes two pistons disposed within the housing, wherein one piston controls flow of the pressurized medium through the supply port, and the other piston controls flow of the pressurized medium through the vent port, based on the level of pressure within the housing. Other embodiments of pressure regulator devices and systems are also provided.
Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a body having an internal cavity for receiving a pressurized medium and inlet and outlet ports that enable a pressurized medium to enter the internal cavity at a first pressure and exit at a second pressure. The exemplary pressure regulator also includes a control piston disposed within the internal cavity that is configured to move in response to a change in pressure within the internal cavity. The pressure regulator of this embodiment also includes a damping feature within the internal cavity that is configured to oppose the movement of the control piston. Other embodiments of pressure regulators and systems are also provided.
Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a housing having a supply port for receiving a pressurized medium within the housing and an outlet port for outputting the pressurized medium to a downstream device. The housing of this embodiment also includes a vent port for venting the pressurized medium from the housing. The pressure regulator of this embodiment further includes two pistons disposed within the housing, wherein one piston controls flow of the pressurized medium through the supply port, and the other piston controls flow of the pressurized medium through the vent port, based on the level of pressure within the housing. Other embodiments of pressure regulator devices and systems are also provided.
Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a piston (62) and supply seal rings (84), wherein the diameter (110) of the piston is at least half of the sum of the diameters of the supply seal rings to reduce deadband and increase sensitivity. In another embodiment, the pressure regulator has a maximum deadband of less than 200 pounds per square inch when coupled to a supply pressure of at least 1000 pounds per square inch. Other embodiments related to pressure regulators are also provided.
Abstract:
A handheld field maintenance bus monitor (22) is provided. The handheld field maintenance bus monitor (22) is coupleable to at least one process communication loop (18), and is configured to capture and store a selected quantity of digital communication observed on the process communication loop (18) during a capture period. Optionally, the handheld field maintenance bus monitor (22) may be configured to couple to and interact with process communication loops of at least two different process communication protocols, such as HART® and FOUNDATION™. A method (100) of analyzing captured and stored communication data is also provided.
Abstract:
A pressure regulator is provided. In one embodiment, the pressure regulator includes a body having an internal cavity for receiving a pressurized medium and inlet and outlet ports that enable a pressurized medium to enter the internal cavity at a first pressure and exit at a second pressure. The exemplary pressure regulator also includes a control piston disposed within the internal cavity that is configured to move in response to a change in pressure within the internal cavity. The pressure regulator of this embodiment also includes a damping feature within the internal cavity that is configured to oppose the movement of the control piston. Other embodiments of pressure regulators and systems are also provided.
Abstract:
A process control loop monitor includes a housing (50) configured to mount in the field of an industrial process. A loop interface circuit (62) couples to a process control loop (18) and receives data from the process control loop (18). A memory (64) stores data received by the loop interface circuit (62) from the process control loop (18).
Abstract:
In at least some embodiments, an apparatus includes a hydraulic directional control manifold and a plurality of electric piezopumps. The apparatus also includes an electric piezopump controller that operates the plurality of electric piezopumps in varying combinations to provide generation and directional control of hydraulic power to linear hydraulic actuators using localized closed-loop hydraulic fluid.