A flow meter includes a meter body and a pressure sensor. The meter body has a liquid impact surface, a sensing surface opposite to the liquid impact surface, and a mounting hole extending from the sensing surface toward the liquid impact surface. The mounting hole is a blind hole. The pressure sensor is mounted in the mounting hole, and has a resistance value that can be measured and that can be changed correspondingly with a change in liquid pressure caused by a change in flow rate. A device for producing an active hydroxyl free radical solution is also disclosed.

A fluid control arrangement for a medical device. The fluid control arrangement has a fluid control circuit with at least one fluid control component, through which a fluid flows. For controlling the at least one fluid control component, a control circuitry with at least one electric and/or electronic component is provided. A first carrier part has a first coupling surface and a second carrier part has a second coupling surface. In the first coupling surface at least one first fluid channel cavity and/or in the second coupling surface at least one second fluid channel cavity is provided. By connecting the carrier parts with each other with facing coupling surfaces, at least one main fluid channel is formed in the area of the separating location. At the first carrier part a first mounting surface for the at least one fluid control component can be provided.

A flow meter for determining the flow velocity of a fluid in a media line, having a sensor base having a bluff body and a sensor body, an electronics unit and a signal interface. The bluff body is arranged substantially upstream of the sensor body in the direction of flow. The sensor body has a carrier part and a substrate arrangement having at least one ceramic substrate, and an anemometer sensor unit and a vortex meter sensor unit are arranged on the substrate arrangement.

A menu navigation engine that enables user configuration of a vortex flowmeter. The vortex flowmeter includes a memory device and a processor, among other hardware components. Software instructions stored on the memory device and executable by the processor implement the menu navigation engine by displaying use case identifiers on the user interface, receiving selections of use case identifiers via the user interface, generating a formatted hierarchical tree of vortex flowmeter configuration nodes associated with the selected use case, and displaying the generated tree on the user interface.

A balancing valve for adjusting the flow rate of a fluid flowing inside a pipe from upstream to downstream in a longitudinal direction of flow. The balancing valve includes: a check valve and a tubular element simulating a Venturi tube, said valve and element being coaxially connected, respectively, from upstream to downstream in the longitudinal direction of flow of the fluid; a device for detecting the difference in pressure which occurs inside the valve; a valve for adjusting the flow rate of the fluid which flows inside the pipe; wherein: the detection device is arranged between the inside of a first upstream chamber of the check valve and the inside of a central cylindrical portion of the tubular element.

A process variable transmitter is configured as a flowmeter for measuring flow of a process fluid through a conduit. The transmitter includes a pitot tube extending into the conduit which creates a differential pressure in the process fluid due to flow of the process fluid. An upstream process variable sensor is mounted on the pitot tube and coupled to the flow of process fluid to sense an upstream process variable of the process fluid. A downstream process variable sensor is mounted on the pitot tube downstream of the upstream process variable sensor and coupled to the flow of process fluid to sense a downstream process variable of the process fluid. Measurement circuitry determines the flow of the process fluid based upon the upstream process variable and the downstream process variable.

Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.

A system for metering gas includes a housing configured to allow a flow of the gas between an input port and an output port. Further, the system includes a flow manager disposed in the housing and configured to modify at least one physical characteristic of the flow of the gas in the housing. Furthermore, the system includes a flow sensor disposed in the housing and configured to generate an electrical signal in response to flow characteristics of the gas in the housing. Moreover, the system also includes a processor configured to determine at least one flow parameter of the gas based on an amplitude characteristic of the electrical signal, a temporal characteristic of the electrical signal, or both the amplitude characteristic and the temporal characteristic of the electrical signal. A method for metering the gas is also presented.

A fluid control arrangement for a medical device. The fluid control arrangement has a fluid control circuit with at least one fluid control component, through which a fluid flows. For controlling the at least one fluid control component, a control circuitry with at least one electric and/or electronic component is provided. A first carrier part has a first coupling surface and a second carrier part has a second coupling surface. In the first coupling surface at least one first fluid channel cavity and/or in the second coupling surface at least one second fluid channel cavity is provided. By connecting the carrier parts with each other with facing coupling surfaces, at least one main fluid channel is formed in the area of the separating location. At the first carrier part a first mounting surface for the at least one fluid control component can be provided.

A vortex flowmeter may utilize a ring-shaped bluff body as the vortex generator or shedder. The ring shape and size of the vortex ring generator may be optimized to produce linear and stable toroidal vortex outputs that may outperform the conventional shedder bar. In comparison to the conventional vortex shedder bar, the ring may have a slimmer configuration and a higher K-factor, and hence, a higher resolution.