Abstract: A smart valve positioner is provided with a local user interface with non-mechanical touch buttons and a display inside a positioner housing under a housing cover for locally operating the valve positioner. The touch buttons are user-operable by touching the touch buttons when the housing cover is open. The housing cover is arranged to make the touch buttons user-operable from outside the housing by touching the housing cover, when the housing cover is closed.

Abstract: A fluid valve assembly for controlling a single-acting or double-acting actuator comprises a valve body having a central bore with at least one supply port for receiving a supply of fluid under pressure, at least one actuator port (C1,C2) for providing a control fluid pressure to an actuator, and at least one exhaust port (EX1,EX2). At least one pair of counter-acting metering edges operationally tied together by a stem movable within central bore in an axial direction a pilot force. Each metering edge of each counter-acting pair comprises a mating seat surface (PS1,PS2,PS3,PS4) on the valve body or the stem, and a poppet ring (PR1,PR2, PR3,PR4) supported by a flexible element (SD1,SD2,SD3,SD4) to the valve body or the stem in a manner allowing a relative axial movement of the poppet ring and the supporting valve body or stem also in a closed state of the respective metering edge.

Abstract: A controller for controlling a pneumatic or hydraulic actuator of a process device includes a position feedback signal input for receiving a measured position signal representing a position of the actuator or the process device, an actuator pressure output, and a pressure sensor for measuring the actuator pressure. The controller is configured to operate in a measured position feedback mode and a simulated position feedback mode. In the measured position feedback mode the actuator is controlled dependent on a setpoint position and the measured position, and in the simulated position feedback mode the actuator is controller based on the setpoint position and a simulated position of the actuator or the process device. The simulated position is derived from the measured actuator pressure by a simulation model.

Abstract: Aspects of the disclosure provide an electric actuator including a fail-safe mode of operation. The electric actuator includes a mechanical stop coupled to the output through the transmission, and a brake coupled to the second driving source through the transmission, the brake being engaged to establish the first pathway through the transmission between the first driving source and the output, the brake being disengaged to establish the second pathway through the transmission between the second driving source and the output, and the mechanical stop being engaged to restrict the output from rotating beyond the fail-safe position and the brake being disengaged to establish the third pathway through the transmission between the first driving source and the second driving source.

Abstract: The invention relates to a valve having an inlet and an outlet, and a closure member. The closure member comprises an inlet area with a plurality of inlet openings and an outlet area. Main flow channels extend from initial openings in the inlet area through the closure member to openings in the outlet area, said initial openings are located in an initial flow inlet area of the inlet area which is first subjected to fluid from the inlet of the valve when the closure member is rotated from a fully closed position towards an initially open position.

Abstract: A pumping energy savings estimator is provided which, based on valve opening data collected for a control valve of a pump-valve system operating in an industrial process, determines an actual maximum (?porg, ˜50% open) of valve operating region of the control valve of the pump-valve system. User can select a new maximum (?pnew, ˜70% open) of valve operating region for the control valve. Then the estimator, based on the determined actual maximum of valve operating region and the selected new maximum of valve operating region, energy saving potential (?psave) in the pump-valve system. The potential energy savings may be put into practice by replacing the original pump with a new smaller pump, or more preferably, replacing or processing the impeller of the original pump, such that the control valve will operate with the selected new optimal maximum opening of valve operating region.

Abstract: A fluid valve assembly having a central bore and a stem axially-movable within the central bore and actuated by an axial pilot force and an axial counter force. An inner supply pressure chamber is provided to retain a stabilized supply pressure providing the axial counter force affecting on the stem. A seal member is arranged coaxially with the stem between the inner supply pressure chamber and an outer supply pressure chamber which is connected to a supply pressure input line. A metering edge is arranged coaxially with the stem to control fluid flow from the outer supply pressure chamber to an actuator chamber. Means are provided to stabilize the supply pressure in the inner chamber against sudden pressure drops in the outer supply pressure chamber.

Abstract: A smart valve positioner is provided with a local user interface with but-tons and a display inside a positioner housing under a housing cover for locally operating the valve positioner. The valve positioner is further provided with a detector detecting whether the housing or the housing cover is open or closed. The operation mode of the local user interface is configured to be different depending on whether the housing or housing cover is open or closed. For example, a larger variety of operations may be available when the housing or housing cover is open.

Abstract: Aspects of the disclosure provide an electric actuator including a fail-safe mode of operation. The electric actuator includes a mechanical stop coupled to the output through the transmission, and a brake coupled to the second driving source through the transmission, the brake being engaged to establish the first pathway through the transmission between the first driving source and the output, the brake being disengaged to establish the second pathway through the transmission between the second driving source and the output, and the mechanical stop being engaged to restrict the output from rotating beyond the fail-safe position and the brake being disengaged to establish the third pathway through the transmission between the first driving source and the second driving source.

Abstract: The invention relates to a valve having an inlet and an outlet, and a closure member. The closure member comprises an inlet area with a plurality of inlet openings and an outlet area. Main flow channels extend from initial openings in the inlet area through the closure member to openings in the outlet area, said initial openings are located in an initial flow inlet area of the inlet area which is first subjected to fluid from the inlet of the valve when the closure member is rotated from a fully closed position towards an initially open position.

Abstract: An RFID system includes a radio frequency identification (RFID) reader and at least one passive RFID sensor tag. A backscattered radio frequency signal from the passive RFID tag is modulated with an oscillation frequency which is dependent on a value of a quantity sensed by a sensing element. The RFID reader converts converting the oscillation frequency of the backscattered signal into an actual value of the sensed quantity based on predetermined sensor configuration information of the passive RFID sensor tag. The sensor configuration information includes information on a sensor element or sensor elements available in the passive RFID sensor tag, and particularly information how to convert the oscillation frequency of the backscattered signal into actual values of the quantity sensed by the respective sensing element.

Abstract: Aspects of the disclosure provide an electric actuator including a first driving source coupled to an output through a first pathway created by a transmission, a second driving source coupled to the output though a second pathway created by the transmission that, upon the electric actuator losses electrical power to the electric actuator, causes the output to be positioned at a fail-safe position, a differential coupled to the first driving source and the second driving source through a third pathway created by the transmission to store energy from the first driving source in the second driving source, and a switching controller that is configured to control switching the transmission between the first pathway, the second pathway, and the third pathway.

Abstract: A smart valve positioner is provided with a local user interface with but-tons and a display inside a positioner housing under a housing cover for locally operating the valve positioner. The valve positioner is further provided with a detector detecting whether the housing or the housing cover is open or closed. The operation mode of the local user interface is configured to be different depending on whether the housing or housing cover is open or closed. For example, a larger variety of operations may be available when the housing or housing cover is open.

Abstract: A smart valve positioner is provided with a local user interface with non-mechanical touch buttons and a display inside a positioner housing under a housing cover for locally operating the valve positioner. The touch buttons are user-operable by touching the touch buttons when the housing cover is open. The housing cover is arranged to make the touch buttons user-operable from outside the housing by touching the housing cover, when the housing cover is closed.

Abstract: In a RFID sensor tag, a sensing element is connected to an oscillator such that an oscillation frequency of the oscillator is dependent on a value of a predetermined variable sensed by the sensing element. The oscillation frequency of the oscillator is a harmonic multiple N of a modulation frequency required for a backscattering modulator. A frequency divider is arranged at the output of the oscillator to produce the modulation frequency from the oscillation frequency. The oscillator can be designed and dimensioned such that a high sensitivity is obtained with all sensor values, and the desired modulation frequency is derived resulting oscillation frequency by selecting a suitable division ratio N.