Abstract: Smart fans are described that can be used in any application in which a flow of a fluid, such as air, is required. In two specific applications, one or more of the fans can be used to conduct a blower door test or a duct leakage test. However, the smart fans described herein can be used in other applications.

Abstract: An airflow measurement device that is configured to measure airflow in an air handling system. The airflow measurement device can include a flow conditioning plate formed with a plurality of plate apertures or holes. A flow sensor is associated with each aperture. The flow sensors can be any type(s) of flow sensors that are suitable for sensing or characterizing one or more aspects of air flowing into and through the apertures, such as pitot sensors, vane anemometers, hot wire anemometers, or the like. The flow sensors can be used to quantify the volumetric airflow rate of the airflow, the speed of the airflow, or any other variable of the airflow from which one can formulate a judgment about the operating efficiency of the air handling equipment.

Abstract: A magnetic flowmeter includes a flowtube with electrodes and field coil and a transmitter that automatically determines an operating setpoint for the magnetic flowmeter based upon sensed coil inductance, sensed coil resistance, a power rating for the transmitter, the flowtube, or both, and selected performance criteria.

Abstract: A polymeric flow tube assembly is provided. The flow tube assembly includes a flow conduit configured to allow fluid flow therethrough. A first coil is mounted with respect to the flow conduit and disposed about a first magnetic pole member. A second coil is mounted with respect to the flow conduit and is disposed about a second magnetic pole member. The second magnetic pole member is configured to cooperate with the first magnetic pole member to generate an electromagnetic field across a flow measurement aperture. First and second electrodes are positioned within the flow tube assembly to measure an electromotive force generated within a fluid in the flow measurement aperture. At least one of the first magnetic pole member, second magnetic pole member, first electrode and second electrode is formed, at least in part, of a polymer.

Abstract: A magnetic flowmeter flowtube assembly is provided. The assembly comprises a flowtube configured to receive a flow of process fluid. The assembly also comprises a fluoropolymer liner disposed within and extending through the flowtube. The assembly also comprises a plurality of electrodes assemblies disposed to measure a voltage induced within the process fluid. Each of the electrode assemblies includes a spring-energized seal disposed about each respective electrode.

Abstract: A polymeric flow tube assembly is provided. The flow tube assembly includes a flow conduit configured to allow fluid flow therethrough. A first coil is mounted with respect to the flow conduit and disposed about a first magnetic pole member. A second coil is mounted with respect to the flow conduit and is disposed about a second magnetic pole member. The second magnetic pole member is configured to cooperate with the first magnetic pole member to generate an electromagnetic field across a flow measurement aperture. First and second electrodes are positioned within the flow tube assembly to measure an electromotive force generated within a fluid in the flow measurement aperture. At least one of the first magnetic pole member, second magnetic pole member, first electrode and second electrode is formed, at least in part, of a polymer.

Abstract: A magnetic flowmeter flowtube assembly is provided. The assembly comprises a flowtube configured to receive a flow of process fluid. The assembly also comprises a fluoropolymer liner disposed within and extending through the flowtube. The assembly also comprises a plurality of electrodes assemblies disposed to measure a voltage induced within the process fluid. Each of the electrode assemblies includes a spring-energized seal disposed about each respective electrode.

Abstract: A magnetic flowmeter flowtube assembly includes a conduit with a first end and a second end. A first neck flange is coupled to the first end of the conduit and has an inside diameter with a first notch extending radially outwardly therefrom. A second neck flange is coupled to the second end and has an inside diameter with a second notch extending radially outwardly therefrom. A fluoropolymer liner is disposed within and extends through the first neck flange, the conduit and the second neck flange. A pair of electrodes is mounted relative to the liner to measure a voltage induced within a process fluid flowing through the liner. A first spring-energized seal ring is disposed in the first notch and a second spring-energized seal ring disposed in the second notch. A method of sealing a magnetic flowmeter having a fluoropolymer liner is also provided.

Abstract: A magnetic flowmeter flowtube assembly includes a conduit having a first end with a first flange and a second end with a second flange. A fluoropolymer liner is disposed within and extending through the first flange, the conduit and the second flange. A first lining protector is mounted to the first flange and a second lining protector mounter to the second flange. A first spring-energized seal is disposed between the first lining protector and the fluoropolymer liner. A second spring-energized seal is disposed between the second lining protector and the fluoropolymer liner.

Abstract: A flowtube assembly for a magnetic flowmeter is provided. The flowtube assembly includes a tube extending from a first mounting flange to a second mounting flange. Each of the first and second mounting flanges has a pipe flange facing surface for mounting to a respective pipe flange. A coil chamber is disposed outside the tube, between the first and second mounting flanges. The coil chamber has at least one coil located inside that is configured to generate a magnetic field within the tube. A liner/electrode module is positioned within the tube and has a non-conductive liner, at least one electrode and at least one electrode conductor. The non-conductive liner extends from the first mounting flange to the second mounting flange. The at least one electrode is positioned in the non-conductive liner to interact with a conductive process fluid.

Abstract: A magnetic flowmeter flowtube assembly includes a conduit having a first end with a first flange and a second end with a second flange. A fluoropolymer liner is disposed within and extending through the first flange, the conduit and the second flange. A first lining protector is mounted to the first flange and a second lining protector mounter to the second flange. A first spring-energized seal is disposed between the first lining protector and the fluoropolymer liner. A second spring-energized seal is disposed between the second lining protector and the fluoropolymer liner.

Abstract: A magnetic flowmeter flowtube assembly includes a conduit with a first end and a second end. A first neck flange is coupled to the first end of the conduit and has an inside diameter with a first notch extending radially outwardly therefrom. A second neck flange is coupled to the second end and has an inside diameter with a second notch extending radially outwardly therefrom. A fluoropolymer liner is disposed within and extends through the first neck flange, the conduit and the second neck flange. A pair of electrodes is mounted relative to the liner to measure a voltage induced within a process fluid flowing through the liner. A first spring-energized seal ring is disposed in the first notch and a second spring-energized seal ring disposed in the second notch. A method of sealing a magnetic flowmeter having a fluoropolymer liner is also provided.

Abstract: A flowtube assembly for a magnetic flowmeter is provided. The flowtube assembly includes a tube extending from a first mounting flange to a second mounting flange. Each of the first and second mounting flanges has a pipe flange facing surface for mounting to a respective pipe flange. A coil chamber is disposed outside the tube, between the first and second mounting flanges. The coil chamber has at least one coil located inside that is configured to generate a magnetic field within the tube. A liner/electrode module is positioned within the tube and has a non-conductive liner, at least one electrode and at least one electrode conductor. The non-conductive liner extends from the first mounting flange to the second mounting flange. The at least one electrode is positioned in the non-conductive liner to interact with a conductive process fluid.

Abstract: A magnetic flowmeter includes a pipe section, coils for generating a magnetic field across the pipe section, and electrodes for sensing EMF induced by process fluid flow through the magnetic field. An assembly framework is mounted on the pipe. The coils, electrodes, and associated wiring of the flowmeter are located and secured in place by the framework.

Abstract: A magnetic flowmeter includes a flowtube with electrodes and field coil and a transmitter that automatically determines an operating setpoint for the magnetic flowmeter based upon sensed coil inductance, sensed coil resistance, a power rating for the transmitter, the flowtube, or both, and selected performance criteria.

Abstract: A magnetic flowmeter includes a pipe section, coils for generating a magnetic field across the pipe section, and electrodes for sensing EMF induced by process fluid flow through the magnetic field. An assembly framework is mounted on the pipe. The coils, electrodes, and associated wiring of the flowmeter are located and secured in place by the framework.

Abstract: A computer aided design (CAD) system ascertains the clear view area of a transparency in light of head orientation and refractive properties of the transparency. Obstructions that limit the clear view are also taken into account. The CAD system is particularly useful in assessing the field of view provided to a pilot by aircraft windshields and the like.

Abstract: A method of parsing print stream data including the steps of intercepting a data file from at least a portion of the print stream data, reading at least a portion of the data file and determining if said data file is of a format having subset formats.

Abstract: A computer aided design system accurately determines the location, shape, and dimensions of a transparency that provides a field of view meeting a clear view area specified by a two dimensional polar vision plot. The computer aided design system projects points on the two dimensional polar vision plot onto a three dimensional surface of the transparency taking into account the observer's head position and the refraction of light caused by the transparency.

Abstract: A method of parsing print stream data including the steps of intercepting a data file from at least a portion of the print stream data, reading at least a portion of the data file and determining if said data file is of a format having subset formats.