Abstract: A leak testing device includes a body portion and a purge gas supply. The body portion defines a cavity. The cavity is operable to enclose a portion of a part to be leak tested. The body portion also comprises at least one fluid port operable to deliver a purge gas to the cavity. The purge gas supply is in fluid communication with that at least one fluid port. The purge gas supply is configured to supply a purge gas through the at least one fluid port. The purge gas is operable to purge the cavity of at least a portion of an atmospheric tracer gas contained in the cavity.

Abstract: A leak testing device includes a body portion and a purge gas supply. The body portion defines a cavity. The cavity is operable to enclose a portion of a part to be leak tested. The body portion also comprises at least one fluid port operable to deliver a purge gas to the cavity. The purge gas supply is in fluid communication with that at least one fluid port. The purge gas supply is configured to supply a purge gas through the at least one fluid port. The purge gas is operable to purge the cavity of at least a portion of an atmospheric tracer gas contained in the cavity.

Abstract: A fill time and stabilize and measurement time are determined for a pneumatic testing procedure. The fill time is computed by identifying, in the filling of a sample unit, a time when a substantial portion of variations of a measured variable (due to stabilization) are completed. The stabilize and measurement time is determined by comparison of the measurement variable behavior when filling sample unit(s) that do not leak, to the measurement variable behaviors when filling a sample unit that is in communication with an orifice simulating a leak. A measurement performance factor may be computed from this data at each of several possible times after a unit is filled. A gauge repeatability factor may be computed based on variance of nonleaking units at each possible time, compared to the variable change made on a sample unit when coupled to a leak-simulating orifice. Either factor may be used to select a stabilize and measurement time.

Abstract: A fitting for sealing against the outer surface of an inlet includes a housing comprising a base and a closure defining a cavity within the housing. A resilient bushing is disposed within the cavity and is positioned between the closure and a piston slidably disposed in the cavity. The fitting has a first condition wherein the inlet can be received within an inner diameter of the bushing through an aperture in the closure. The fitting can be actuated to a second condition wherein the piston axially compresses the resilient bushing against the closure, thereby causing the inner diameter of the bushing to expand radially inwardly to sealingly engage the outer surface of the inlet. When the inlet is sealingly engaged by the resilient bushing in the second condition, fluid may be admitted to the inlet through a fluid passage in the housing.

Abstract: A fitting for sealing against the inner surface of an inlet includes an elongate mandrel and one or more resilient bushings supported on the mandrel. The fitting has a first condition wherein the resilient bushing can be received within the inlet. The fitting can be actuated to a second condition the resilient bushing expands radially to sealingly engage the inner surface of the inlet. When the inlet is sealingly engaged by the resilient bushing in the second condition, fluid may be admitted to the inlet through an axial bore in the mandrel. When the fitting is used to fill a pipe system, fluid supplied to the inlet may be pressurized to facilitate monitoring the pipe system for leaks. The fitting may include a sealing member configured to seal against a terminal end of the inlet when the bushing is radially expanded to seal against the inner surface of the inlet in the second condition.

Abstract: A fitting for sealing against the outer surface of an inlet includes a housing comprising a base and a closure defining a cavity within the housing. A resilient bushing is disposed within the cavity and is positioned between the closure and a piston slidably disposed in the cavity. The fitting has a first condition wherein the inlet can be received within an inner diameter of the bushing through an aperture in the closure. The fitting can be actuated to a second condition wherein the piston axially compresses the resilient bushing against the closure, thereby causing the inner diameter of the bushing to expand radially inwardly to sealingly engage the outer surface of the inlet. When the inlet is sealingly engaged by the resilient bushing in the second condition, fluid may be admitted to the inlet through a fluid passage in the housing.

Abstract: A fitting for sealing against the inner surface of an inlet includes an elongate mandrel and one or more resilient bushings supported on the mandrel. The fitting has a first condition wherein the resilient bushing can be received within the inlet. The fitting can be actuated to a second condition the resilient bushing expands radially to sealingly engage the inner surface of the inlet. When the inlet is sealingly engaged by the resilient bushing in the second condition, fluid may be admitted to the inlet through an axial bore in the mandrel. When the fitting is used to fill a pipe system, fluid supplied to the inlet may be pressurized to facilitate monitoring the pipe system for leaks. The fitting may include a sealing member configured to seal against a terminal end of the inlet when the bushing is radially expanded to seal against the inner surface of the inlet in the second condition.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the present of a tracer gas and indicate the location of a leak. The sensor apparatus includes multiple sensors, each of which is a metal halide sensor. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the presence of a tracer gas and indicate the location of a leak. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the presence of a tracer gas and indicate the location of a leak. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the presence of a tracer gas and indicate the location of a leak. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the presence of a tracer gas and indicate the location of a leak. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the presence of a tracer gas and indicate the location of a leak. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: The present invention relates to a sensor apparatus configured to detect the presence of a gas, such as a tracer gas and a leak detection apparatus configured to detect the presence of a tracer gas and indicate the location of a leak. The leak detection apparatus may further be configured to quantify the leak rate at the leak location.

Abstract: An improved method for detecting leaks in a sealed package or container, where the contents of the container includes at least one liquid component, is disclosed. First the container to be tested is placed in a vacuum chamber which is in turn sealed. A vacuum is then applied to the vacuum chamber to lower the pressure, within the chamber, to a pressure that is below the vapor pressure of the liquid component in the container being tested. The vacuum source is then isolated from the chamber. The presence and severity of any package leak is detected by monitoring the increase of pressure in the vacuum chamber as a leak indicative signal whereby a relatively steady increase in pressure over time is indicative of “leaking” unrelated to the package under test and wherein relatively uneven increases of pressure, over time ,is indicative of boiling liquid and therefore a leak in at least one test specimen.