Fisher Controls International LLC

Jerry Marvin Ceaser

John Patrick Dilger

Nile K Dielschneider

Nile Kenton Dielschneider

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.

Fugitive emission collection device

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.

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Newton, IA, United States of America

Jerry Marvin Ceaser