Abstract: A fugitive emission collection device for acquiring an atmosphere sample around a seal is provided. The emission collection device has a rigid member that forms a low impedance cavity shaped to overlay a seal. The emission collection device has a conduit with an inlet in fluid communications with the low impedance cavity and an outlet that can be connected to a chemical sensing system to analyze the atmosphere sample for emissions leaking from the seal.

Abstract: A fugitive emission collection device for acquiring an atmosphere sample around a seal is provided. The emission collection device has a rigid member that forms a low impedance cavity shaped to overlay a seal. The emission collection device has a conduit with an inlet in fluid communications with the low impedance cavity and an outlet that can be connected to a chemical sensing system to analyze the atmosphere sample for emissions leaking from the seal.

Abstract: A device for remotely calibrating leak sensors is disclosed. The leak sensor calibration device includes a reservoir for storing a fluid calibrant, a conduit in flow communication with the reservoir, an outlet nozzle, an air supply source, and a valve mechanism. A portion of the conduit defines a dosing chamber for storing a measured quantity of the calibrant, and the outlet nozzle is in flow communication with the dosing chamber. The air supply source is adapted to pressurize the measured quantity of calibrant stored in the dosing chamber. The valve mechanism is adapted to eject the measured quantity of calibrant stored in the dosing chamber to the atmosphere through the outlet nozzle.

Abstract: A system and method for collecting data relating to emissions from an emissions source is disclosed. The system comprises an accumulator adapted to receive emissions from the emissions source, a sensor in flow communication with an outlet of the accumulator for generating a signal indicative of a physical property of the emissions, and a sensor interface circuit receiving the signal and generating data relating to the emissions from the emissions source. A system and method for reducing emissions from an emissions source is also disclosed, including a microcontroller receiving data relating to the emissions from the emissions source and generating control signals for reducing the emissions.

Abstract: An apparatus for quantifying the position of a released arrow as it passes across the bow riser. A low power, electronics measurement unit attached onto or mounted internal to a bow in communication with a sensor detects a signal from an arrow shaft for the purposes of collecting data pertaining to arrow position. The electronics measurement unit provides a user configurable gain to control the variation and sensitivity of the collected data. The optical trigger mechanism used to stimulate the sensor does not require arrow shaft modification. Statistical parameters of the collected data are displayed on the bow and are used to determine and improve archery tackle performance.

Abstract: A displacement sensor includes a magnet assembly having a housing for mounting to one of first and second relatively moveable elements. First and second magnets are mounted to the magnet assembly housing so that the north pole of one magnet confronts the south pole of the other magnet, and vice versa. The first and second magnets form a longitudinal space between them. A flux-shaping pole piece on each of the poles have configurations to sculpt fringing magnetic flux in the longitudinal space so that magnetic flux density in the longitudinal space varies substantially linearly along a line in the longitudinal space between the confronting poles of the magnets. A magnetic field sensor assembly has a housing for mounting to the other of the first and second elements. A magnetic flux sensor is mounted to the sensor housing on the line in the longitudinal space between the first and second magnets.

Abstract: A device for delivering a metered quantity of vaporized liquid material to the surrounding atmosphere is disclosed. The device includes a reservoir for storing the liquid material, and a conduit in flow communication with the reservoir, with a portion of the conduit defining a dosing chamber for storing the metered quantity of the liquid material. The conduit further includes an impeding portion for restricting the flow of the liquid material from the dosing chamber toward the reservoir. An outlet nozzle is provided and is in flow communication with the dosing chamber. A thermal activator is disposed adjacent the dosing chamber for vaporizing the liquid material in the dosing chamber thereby ejecting the vaporized material through the outlet nozzle to the atmosphere.

Abstract: A instrument and method for measuring archery tackle performance is disclosed. A low power, electronics measurement unit attached onto or mounted internal to a bow in communication with a sensor which detects a signal from an external trigger mechanism mounted onto or internal to an arrow shaft for the purposes of measuring arrow velocity or collecting data indicative of arrow position. The statistical parameters of the collected data may then be used to determine and improve archery tackle performance in any shooting situation.

Abstract: A device for remotely calibrating leak sensors. A supply of liquid analyte calibrant is stored in a reservoir, and is communicated to an outlet nozzle by a conduit having a throughbore. The conduit terminates in an outlet nozzle, and portion of the conduit defines a dosing chamber for storing a measured dose of the liquid calibrant. A thermal activator such as a resistive coil or a radio frequency unit is disposed adjacent the dosing chamber for applying a steep thermal gradient in order to bring the calibrant quickly to its boiling point such that the measured quantity is ejected from the outlet nozzle.

Abstract: A displacement sensor senses relative displacement between first and second members and includes a housing mounted to the first member. Magnet means having first and second pole tips is mounted to the housing. A flux sensor is mounted to the housing between the first and second pole tips. A target is mounted to the second member to form a flux path between the first and second pole tips having a reluctance that varies with displacement between the first and second members. The arrangement forms a first lossy flux path of fixed reluctance through the flux sensor and a primary flux path through the target. In one form the target has a surface configured to provide a gap height that varies with displacement. In another form the target has a surface configured to provide a target width that varies with displacement. The sensor may be used differentially by arranging two such sensors.