An ultrasonic flowmeter having a measuring tube, a control unit, at least one first ultrasonic measuring unit and a second ultrasonic measuring unit, the measuring tube having a measuring tube interior and a measuring tube longitudinal axis, wherein each of the ultrasonic measuring units is arranged on the measuring tube, wherein each ultrasonic measuring unit has a first ultrasonic transducer and a second ultrasonic transducer, the first and the second ultrasonic transducers spanning a sound measuring section with a sound axis. The sound measuring section and the sound axis penetrate the measuring tube interior for carrying out ultrasonic measurements. To provide an ultrasonic flowmeter for reliable measurement of a multi-phase medium, the sound axis of the first ultrasonic measuring unit and the sound axis of the second ultrasonic measuring unit span a sound measuring plane which extends substantially parallel to the longitudinal axis of the measuring tube.

Illustrative embodiments of a meter box and couplings, either separately or in combination, are provided. An illustrative embodiment provides a valve coupling that is disposed through a wall of the meter box such that a first portion of the valve coupling extends exterior of the meter box and a second portion of the valve coupling extends interior of the meter box. An outlet coupling is disposed through the wall of the meter box such that a first portion of the outlet coupling extends exterior of the meter box and a second portion of the outlet coupling extends interior of the meter box. A telescoping tube is located in the meter box, extended into and movable relative to, and in fluid communication with, at least one of the second portion of the valve coupling and/or the second portion of the outlet coupling. The telescoping tube varies a distance between the valve coupling and the outlet coupling within the meter box.

Illustrative embodiments of a meter box and couplings, either separately or in combination, are provided. An illustrative embodiment provides a valve coupling that is disposed through a wall of the meter box such that a first portion of the valve coupling extends exterior of the meter box and a second portion of the valve coupling extends interior of the meter box. An outlet coupling is disposed through the wall of the meter box such that a first portion of the outlet coupling extends exterior of the meter box and a second portion of the outlet coupling extends interior of the meter box. A telescoping tube is located in the meter box, extended into and movable relative to, and in fluid communication with, at least one of the second portion of the valve coupling and/or the second portion of the outlet coupling. The telescoping tube varies a distance between the valve coupling and the outlet coupling within the meter box.

An artificial eye assembly (100) comprising: ⋅an anterior layer (50) comprising an anterior cavity (52); ⋅a flow con-stricting (40) layer comprising a first aperture (42), and wherein the first aperture (42) is in fluid communication with the anterior cavity (52); ⋅a shaping layer (30) comprising a second aperture and a shaping structure (32), wherein the shaping structure (32) is located within, partially within, or outside of the second aperture, and wherein the shaping structure comprises (32) one or more webs (33), the webs (33) connecting the structure (32) to the rest of the shaping layer (30), and wherein the second aperture is in fluid communication with the first aperture (42); ⋅a flow resistive layer (20) comprising pores, and wherein pores of the layer are in fluid communication with the second aperture; ⋅a posterior layer (10) comprising a posterior cavity (12), and wherein the posterior cavity (12) is in fluid communication with pores of the flow resistive layer (20); ⋅a fluid inlet (13) located in the anterior and/or posterior cavity (12, 52), or located in or adjacent to the second aperture; ⋅a fluid outlet (54) located in the anterior cavity; ⋅and an injection inlet (14) located in the posterior cavity and/or located in the anterior cavity, and wherein the anterior cavity (52) and the posterior cavity (12) are in fluid communication with one another via a fluid path formed through the layers (10, 20, 30, 40 50); and wherein, in use, a fluid introduced under pressure into the assembly via the fluid inlet (13) will flow along the fluid path and exit the assembly via the fluid outlet (54) with a first flow rate.

An artificial eye assembly (100) comprising: ⋅an anterior layer (50) comprising an anterior cavity (52); ⋅a flow con-stricting (40) layer comprising a first aperture (42), and wherein the first aperture (42) is in fluid communication with the anterior cavity (52); ⋅a shaping layer (30) comprising a second aperture and a shaping structure (32), wherein the shaping structure (32) is located within, partially within, or outside of the second aperture, and wherein the shaping structure comprises (32) one or more webs (33), the webs (33) connecting the structure (32) to the rest of the shaping layer (30), and wherein the second aperture is in fluid communication with the first aperture (42); ⋅a flow resistive layer (20) comprising pores, and wherein pores of the layer are in fluid communication with the second aperture; ⋅a posterior layer (10) comprising a posterior cavity (12), and wherein the posterior cavity (12) is in fluid communication with pores of the flow resistive layer (20); ⋅a fluid inlet (13) located in the anterior and/or posterior cavity (12, 52), or located in or adjacent to the second aperture; ⋅a fluid outlet (54) located in the anterior cavity; ⋅and an injection inlet (14) located in the posterior cavity and/or located in the anterior cavity, and wherein the anterior cavity (52) and the posterior cavity (12) are in fluid communication with one another via a fluid path formed through the layers (10, 20, 30, 40 50); and wherein, in use, a fluid introduced under pressure into the assembly via the fluid inlet (13) will flow along the fluid path and exit the assembly via the fluid outlet (54) with a first flow rate.

A flow sensor sub-assembly for sensing flow of a fluidic medicament is disclosed. The flow sensor sub-assembly includes a first spring contact and a second spring contact. The spring contacts are secured to a base that has a circuit for conducting an electrical signal to and from the spring contacts to a microprocessor. The first spring contact is in electrical communication with a first piezo element and the second spring contact is in electrical communication with a second piezo element. The first spring contact has a first contact force against the first piezo element and the second spring contact has a second contact force against the second piezo element, and the first and second contact forces are equivalent. A circuit board for interfacing to a flow sensor having a plurality of piezo elements for transmitting a flow signal indicative of flow of fluidic medicament is also disclosed.

A flow sensor sub-assembly for sensing flow of a fluidic medicament is disclosed. The flow sensor sub-assembly includes a first spring contact and a second spring contact. The spring contacts are secured to a base that has a circuit for conducting an electrical signal to and from the spring contacts to a microprocessor. The first spring contact is in electrical communication with a first piezo element and the second spring contact is in electrical communication with a second piezo element. The first spring contact has a first contact force against the first piezo element and the second spring contact has a second contact force against the second piezo element, and the first and second contact forces are equivalent. A circuit board for interfacing to a flow sensor having a plurality of piezo elements for transmitting a flow signal indicative of flow of fluidic medicament is also disclosed.

A meter bypass assembly includes a housing and a valve assembly. The housing defines a first inlet and a first outlet, and a second inlet and a second outlet. The valve assembly is rotatable to a first position in which fluid is allowed to flow from the first inlet to the first outlet and from the second inlet to the second outlet. The valve assembly is also rotatable to a second position in which fluid is allowed to flow from the first inlet to the second outlet and is restricted from flowing from the first inlet to the first outlet and from the second inlet to the second outlet. The valve assembly includes a shaft extending in a longitudinal direction of the housing and first and second valve bodies rotationally fixed to opposing ends of the shaft.

Provided are flow sensor assemblies for determining a flow rate of a liquid that include an O-ring support, a printed circuit board (PCB) positioned in the O-ring support, a plurality of couplings of a male sensor pin and a female sensor pin, a plurality of thermistors associated with the plurality of couplings, wherein each thermistor of the plurality of thermistors are positioned on the PCB and are adjacent to a respective coupling of the plurality of couplings, and an over-molding material that holds the PCB in place with regard to the O-ring support. Methods are also provided.

Embodiments of the present invention provide a hinge nut apparatus for a meter coupling. In an embodiment of the invention, the hinge nut includes at least two portions attached to each other by a hinge pin adjacent a distal end of each portion and the two portions are configured to be moved between an open position and a closed position. The closed position forms an outer surface and an opening forming an inner surface. The inner surface includes a first interior diameter adjacent a distal end of the opening and a second interior diameter adjacent the first interior diameter. The second interior diameter is greater than the first interior diameter and forms a lip and at least a portion of the second interior diameter includes threading.