Abstract: A compact, pressure conserving, steam quality and flow rate measurement system is described. Embodiments of the system can include a steam quality measuring device having a converging/diverging nozzle and a conditioning orifice plate. The steam quality measuring device can be adapted to measure flow conditions of a two-phase steam to determine steam quality. The converging/diverging nozzle can be implemented to reduce pressure loss and control flow rate. The conditioning orifice plate can be implemented to reduce flow conditioning pipe lengths and eliminate secondary flow conditioning elements. By placing the two flow elements in series, data from the flow elements can allow for a simultaneous solution of flow equations yielding a measurement for steam quality.

Abstract: A compact, pressure conserving, steam quality and flow rate measurement system is described. Embodiments of the system can include a steam quality measuring device having a converging/diverging nozzle and a conditioning orifice plate. The steam quality measuring device can be adapted to measure flow conditions of a two-phase steam to determine steam quality. The converging/diverging nozzle can be implemented to reduce pressure loss and control flow rate. The conditioning orifice plate can be implemented to reduce flow conditioning pipe lengths and eliminate secondary flow conditioning elements. By placing the two flow elements in series, data from the flow elements can allow for a simultaneous solution of flow equations yielding a measurement for steam quality.

Abstract: An apparatus and method for filtering a signal is described. The apparatus includes a first singly terminated filter that filters a signal in a first frequency range, and a second singly terminated filter that filters the signal in a second frequency range, the inputs of the filters being connected together, wherein an element of the first filter is coupled to an additional element to form a frequency response transmission zero in a stopband frequency range of the first filter. The method includes receiving a signal, the signal containing content from a first source in a first frequency range and content from a second source in a second frequency range different than the first range, applying filtering, and applying filtering to generate a second output signal, using filters that include a singly terminated filter section with additional circuit elements to form a transmission frequency zero in the stopband frequency range.

Abstract: An apparatus and method for filtering a signal is described. The apparatus includes a first singly terminated filter that filters a signal in a first frequency range, and a second singly terminated filter that filters the signal in a second frequency range, the inputs of the filters being connected together, wherein an element of the first filter is coupled to an additional element to form a frequency response transmission zero in a stopband frequency range of the first filter. The method includes receiving a signal, the signal containing content from a first source in a first frequency range and content from a second source in a second frequency range different than the first range, applying filtering, and applying filtering to generate a second output signal, using filters that include a singly terminated filter section with additional circuit elements to form a transmission frequency zero in the stopband frequency range.

Abstract: An apparatus and method for applying signals into a filter circuit is disclosed. The apparatus includes a filter circuit that filters an input signal and outputs a signal in a first frequency range, and a filter circuit that filters the input signal and outputs a signal in a second frequency range that is different from the first frequency range, wherein the second filter circuit includes an interface circuit for inserting a signal used to receive the first frequency range signal. The method includes receiving a signal containing content from a first source in a first frequency range and content from a second source in a second frequency range, providing filtering to produce a signal containing the first content, providing filtering to produce a signal containing the second content, and applying a signal to second content signal processing circuitry, the signal provided used for receiving the content from the first source.

Abstract: A steam quality and flow rate measurement system is described. Embodiments of the system include a steam quality measuring device having a converging/diverging nozzle and ceramic spacer. The steam quality measuring device can be adapted to measure an impedance of a two-phase steam to determine steam quality. The converging/diverging nozzle can be implemented to mix the two-phase flow and reduce pressure loss. The ceramic spacer can be positioned such that steam is in a cross flow when interfacing with the ceramic spacer inside the steam quality measuring device. By placing the spacer in such a position, an electrically conductive liquid phase can be prevented from coating a surface of the ceramic spacer.

Abstract: A steam quality and flow rate measurement system is described. Embodiments of the system include a steam quality measuring device having a converging/diverging nozzle and ceramic spacer. The steam quality measuring device can be adapted to measure an impedance of a two-phase steam to determine steam quality. The converging/diverging nozzle can be implemented to mix the two-phase flow and reduce pressure loss. The ceramic spacer can be positioned such that steam is in a cross flow when interfacing with the ceramic spacer inside the steam quality measuring device. By placing the spacer in such a position, an electrically conductive liquid phase can be prevented from coating a surface of the ceramic spacer.

Abstract: A net for collecting leaves from a lawn. The inventive device includes a capturing web positionable in a flat orientation over a lawn. A closure assembly is mounted to the web and operates to pivot an outer peripheral edge of the web upwardly from the lawn and subsequently inwardly to trap debris in the net for disposal thereof.