Abstract: A device for evacuating a film chamber using a pump system that comprises at least two vacuum pumps, designed to evacuate the film chamber alternately. A suction capacity of the first vacuum pump is greater than that of the second vacuum pump and the final pressure achievable by the first vacuum pump is less than that of the second vacuum pump.

Abstract: The invention relates to a gas leakage search device including a test gas spray device for spraying a test object with a test gas, a vacuum assembly for evacuating the test object, wherein the vacuum assembly has a vacuum pump and a gas detector downstream of the test object for measuring the test gas proportion, and an analysis unit which evaluates the measurement signal of the gas detector. The invention is characterized in that a data communication connection is established between the spray device and the analysis unit; the spray device is designed to detect at least one point in time of the spraying process and to transmit same to the analysis unit, and the analysis unit is designed to output the corresponding measured test gas proportion at the transmitted point in time of the spraying process.

Abstract: The present invention relates to a flow wrapper which comprises a form and/or film tube, which forms the planar film into a film tube and/or fills the film tube with a packaging item and which comprises means to provide a longitudinal- and/or cross-seal to the film tube.

Abstract: A leak detection system comprising a substantially sealed accumulation chamber adapted to accommodate a single gas container, the accumulation chamber being sealed so that when a gas container is in the accumulation chamber gas leaked from that container accumulates. An optical detector is provided for detecting leaked gas, the detector including an optical cell. A controller directs a reference sample to the optical cell and subsequently directs a sample from the from the accumulation chamber to the optical cell. The optical detector is operable use both the reference sample and the accumulation chamber sample to detect leaked gas.

Abstract: A leakage inspection method and leakage inspection device for container to be inspected are provided. When a container to be inspected having a deformable flexible part is to be inspected for leakage, the container to be inspected is filled with an inspection gas containing helium, the container to be inspected, which has been filled with the inspection gas, is disposed in an inspection chamber partitioned from the outside, and an upward flow of a carrier gas is formed from the lower part to the upper part of the container to be inspected. A leakage of the inspection gas filled in the container to be inspected is then detected on the basis of the result of measuring the concentration of helium in the carrier gas collected at a position higher than a position where the carrier gas is fed into the inspection chamber.

Abstract: The present invention relates to a method and a device for determining the robustness and tolerance of pre-filled containers, in particular pre-filled syringes (PFS) against accidental movement of flexible parts, specifically tip cap and/or plunger movement due to external influences by measuring the leakage rate of a test medium in correlation to a movement of a flexible parts.

Abstract: A spray device for detecting leaks is provided, including: a duct including an inlet configured to be connected to a tracer gas source, and an outlet; a valve interposed between the inlet and the outlet; a casing receiving the duct and the valve; at least one probe arranged in the duct, the at least one probe being configured to measure a parameter revealing a presence of the tracer gas in the duct; and at least one information device borne by the casing, configured to provide information on the presence of tracer gas in the duct in relation to a measurement performed by the at least one probe.

Abstract: A method for detecting fluctuations in the amount of test gas detected by a sniffer probe of a leak detector in the gas flow from around a test piece pressurized with an oxygen-free test gas containing at least an amount of CO2, wherein an amount of oxygen in the ambient air is measured.

Abstract: A method of reducing a leak or a risk of a leak of a pipe system is disclosed. The pipe system is filled with a composition that includes metal powder and xylenes, and a pressure is applied to the filled pipe system and the pipe system is drained of said composition. Also, the use of a composition for reducing a leak or a risk of a leak of a pipe system is disclosed.

Abstract: A device comprises: a container; a first fitting coupled to the container; and a second fitting coupled to the container, wherein the first fitting is configured for coupling to a first service port of a system and the second fitting is configured for coupling to a second service port of the system such that a fluid can travel from the first service port to the second service port through the container while the system is running, wherein the system comprises at least one of an air conditioning system or a refrigeration system.

Abstract: A method for monitoring the leaktightness of sealed products is provided, including: a charging stage during which at least one sealed product containing a tracer gas is placed in a chamber under atmospheric pressure; a pre-evacuation stage during which the chamber containing the at least one sealed product is brought into communication with a buffer volume under a subatmospheric pressure for a pre-evacuation time of less than 0.5 second; and bringing the chamber into communication with an analysis line arranged to bypass the buffer volume in order to measure a concentration of the tracer gas in the chamber so as to detect a leak from the at least one sealed product. An installation for the detection of leaks for implementing the method is also provided.

Abstract: The present invention relates to an arrangement for testing the tightness of a container (2), comprising a testing chamber (3), in which the container (2) which is to be tested can be arranged, also comprising a pressure-altering device (5), in order to alter a pressure in the testing chamber (3) relative to a pressure in the container (2), further comprising a differential-pressure sensor (4) for determining a pressure difference between a reference pressure in a reference chamber (6) and a pressure in the testing chamber (3), and additionally comprising a valve (7) having a closing element (70), a first sealing seat (71) and a second sealing seat (72), wherein the first sealing seat (71) comprises a first sealing element (11, 21) for sealing the reference chamber (6) in relation to an antechamber, and wherein the second sealing seat (72) comprises a second sealing element (12, 22) for sealing the testing chamber (3) in relation to the antechamber (8).

Abstract: A vehicle component has at least one sandwich part which forms a crash element that absorbs kinetic energy. The at least one sandwich part has a layer structure of at least two fiber-reinforced and one synthetic resin matrix-containing cover layer elements and at least one core layer element provided between two adjacent cover layer elements. The at least one core layer element has channels which pass transversely through each cover layer element and/or the core layer element. The at least one core layer element is made of a hard foam material or a softwood, and the channels provided in the core layer element form predetermined breaking points for the core layer element.

Abstract: A method of gas detection includes sending, by a gas sensing device to a data collection device, reports of detected concentrations of a particular gas by an associated gas sensor of the gas sensing device per a predetermined schedule or in response to an unscheduled request by the data collection device. The method may include determining whether a latest detected gas concentration is greater than a predetermined threshold, and if so, automatically sending updated reports of detected gas concentrations to the data collection device at a rate faster than that provided by the predetermined schedule. The method may further include determining whether a tracked rate that the gas concentration is changing indicates a decrease in concentration of the gas at a rate at which there is no safety concern, and if so, clearing an over-threshold alarm. A gas sensing device is also presented.

Abstract: An apparatus, such as a lithographic apparatus, has a metrology frame that has a reference frame mounted thereon that includes a reference surface. A gas gauge is movable relative to the reference frame, metrology frame, and a measured surface. A reference nozzle in the gas gauge provides gas to the reference surface and a measurement nozzle provides gas to the measured surface. A microelectromechanical (MEM) sensor may be used with the gas gauge to sense a difference in backpressure from each of the reference nozzle and the measurement nozzle. Optionally, multiple gas gauges are positioned in an array, which may extend in a direction that is substantially parallel to a plane of the measured surface. The gauges may be fluidly connected to a reference nozzle of the gas gauge. A channel may distribute gas across the array.

Abstract: Provided is a porous pellet for inclusion into an operating fluid of a fluid system for detecting sites of fluid leakage. The porous pellet comprises a solid matrix formed by at least one fluorescent dye which is solid at room temperature. The matrix has a porosity of from about 10% to about 90%. Methods of installing the porous pellets into fluid system for detection of leaks is also provided.

Abstract: Methods and systems are provided for detecting leaks in an intake manifold of an engine. In one example, a method may include closing all intake valves of all cylinders of the engine during an engine shut down responsive to vacuum in the intake manifold reaching a pre-determined vacuum level. The method may further include indicating a leak in the intake manifold responsive to a change in a level of vacuum in the intake manifold after closing all the intake valves of all cylinders.

Abstract: A container (1) has a measuring-cell housing (5) that protrudes into the container interior (2). The measuring-cell housing (5) has a measuring gap (6) bounded by two opposed spaced-apart lateral surfaces (8, 9), and a connecting surface (10) connects the lateral surfaces (8, 9). Each lateral surface (8, 9) has an optical window (11, 12). A first optical fiber (15, 15?) is arranged before the first window (11) and a second optical fiber (17, 17?) is arranged before the second window (12). Receiving channels (14, 16, 18) are arranged before the windows (11, 12, 13) and subsequently can be fit with the optical fibers (15, 15?, 17, 17?, 19) from the outside. The measuring-cell housing (5) having the windows (11, 12, 13) and the receiving channels (14, 16, 18) is connected fixedly to the wall (3) of the container interior (2).

Abstract: A mass spectrometer system can include an ion source, a vacuum chamber; a mass analyzer within the vacuum chamber, a transfer tube between the ion source and the vacuum chamber, a transfer tube heater, and a vacuum pump. The mass spectrometer system can be configured to reduce the pump speed of the vacuum pump in response to receiving a transfer tube swap instruction; lower the temperature of the transfer tube to below a first threshold; operating the vacuum pump at the reduced pump speed while the transfer tube is replaced with a second transfer tube; heating the second transfer tube to a temperature above a pump down temperature; and increasing the pump speed of the vacuum pump after the temperature of the second transfer tube exceeds a second threshold.

Abstract: Methods and systems are provided for increasing the robustness of engine off natural vacuum testing. In one example, following an engine-off event, a heat rejection inference is determined, and further adjusted based on a fuel level and ambient temperature. In this way, an evaporative emissions system leak test may be enabled under conditions where the leak test may otherwise not be executed, thus increasing opportunities for evaporative emissions system leak detection and correspondingly reducing bleed emissions.

Abstract: A method for conducting an integrity test on a flexible test container (1) includes arranging the test container (1) in an examination container (5) that is sealable in a fluid-tight manner, providing negative pressure in the interior of the sealed examination container (5), filling examination fluid into the test container (1) arranged in the examination container (5), detecting examination fluid present in the interior of the examination container (5), and providing negative pressure in the test container (1) arranged in the examination container (5) prior to filling the examination fluid. Prior to filling the examination fluid, the negative pressure in the test container (1) is lower than the negative pressure in the interior of the examination container (5), and the pressure difference between the negative pressure in the test container (1) and the negative pressure in the interior of the sealed examination container (5) is more than 0 mbar and a maximum of 100 mbar.

Abstract: A microelectromechanical sensor (MEMS) package includes a gyroscope and an accelerometer. The gyroscope is located within a low-pressure cavity that is sealed from an external pressure. The accelerometer is located within a cavity, and the seal for the accelerometer cavity is entirely within the gyroscope cavity. Under normal operating conditions, the accelerometer seal holds the accelerometer cavity at a higher pressure than the pressure of the enclosing gyroscope cavity. In the event that one of the gyroscope seal or the accelerometer seal is broken, the gyroscope senses the change in pressure and a failure is identified.

Abstract: A method for manufacturing a leak tight porous component includes the steps of forming a porous component; applying a first application of a surface sealant layer to the component; providing pressurized gas into a wall of the component via a known leak in the surface sealant; applying liquid to the component while pressurized gas is flowing into the wall of the component via the known leak. The method further includes the steps of inspecting the component for the formation of bubbles; identifying a new leak area in the component; removing at least a substantial amount of liquid from the component; and applying a second application of surface sealant to the new leak area.

Abstract: Multiple chemical tracers are provided in a fluid system, and measured to evaluate parameters of the system. The multiple chemical tracers include at least one reactive chemical tracer that provides a measurable signal with an intensity that changes as the reactive chemical tracer reacts in the fluid system. The signals of the multiple chemical tracers are compared to each other to evaluate a system parameter, such as temperature, pH, or system events.

Abstract: Methods and systems are provided for detecting exhaust gas oxygen sensor degradation due to sealant off-gassing. In one example, a method may include indicating exhaust gas oxygen sensor degradation due to sealant off-gassing responsive to a change in fueling demand without a change in driver-demanded torque after a threshold exhaust temperature has been reached. In response to the indication, a measurement correction may be learned and applied to measurements of the exhaust gas oxygen sensor in order to accurately determine an air-fuel ratio of the exhaust.

Abstract: Systems and methods for brokering storage services are disclosed. In one embodiment, the brokering system stores a mapping of stored data sets to online storage providers. The system can monitor one or more metrics associated with a plurality of online storage providers, identify one or more provider criteria associated with a first customer account, and obtain one or more metrics of a first storage provider storing a first data set associated with the first customer account. The system can determine whether to migrate the first data set based in part on the monitored metrics, the metrics of the first storage provider and the provider criteria. The system can auto-initiating migration of the first data set from the first storage provider to one or more selected storage providers of the plurality of online storage providers and update the mapping for the first data set.

Abstract: Test leak device including a gas-filled container and a capillary extending through a container wall. The gas including at least 10% of atmospheric air.

Abstract: The invention concerns a detection method for checking sealed product packages for leaks, characterized in that it comprises the following steps: at least one previously sealed product (2) is placed in an air, nitrogen, or oxygen atmosphere, in a chamber (3) (step 101), the pressure in the chamber (3) is lowered to a secondary vacuum pressure below 10?1 mbar and, while continuing the secondary vacuum pumping of the chamber (3), the gases contained in the chamber are ionized to monitor the change in the chamber (3) of the concentration of at least one gaseous species of the gas volume contained within the sealed product (2) chosen from among nitrogen, oxygen, or argon, by analysis by optical emission or mass spectrometry (step 102).

Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) detection device that includes a decomposition component, a charged particle filter, and a sensing component. The decomposition component is configured to irradiate a gas sample with a radioactive element to decompose HFC gas under conditions sufficient to form hydrogen fluoride (HF) gas and one or more ionized particles. The charged particle filter is configured to filter the one or more ionized particles, and the sensing component is configured to detect the HF gas.

Abstract: The present invention discloses a detection device and a detection method, wherein the detection device includes a seal chamber, a gas flow output unit and a gas flow detection unit, a substrate to be detected is horizontally placed in the seal chamber, the gas flow output unit is located in the seal chamber and below the substrate, the gas flow output unit is connected with the seal chamber, the gas flow output unit is used for outputting detection gas flow to the upper surface of the substrate, and the gas flow detection unit is used for detecting whether leak gas flow exists on the lower surface of the substrate. The leak gas flow exists on the lower surface of the substrate is detected by the gas flow detection unit, and whether the substrate is damaged is judged based on a detection result of the gas flow detection unit.

Abstract: A sniffer leak detector includes a mass spectrometer for analyzing hydrogen or helium, a turbomolecular pump which is connected with said mass spectrometer and whose outlet is connected with a prevacuum pump, and a sniffer probe which includes a plurality of intake lines and is connected with said inlet of said turbomolecular pump, wherein a vacuum pump includes at least three stages whose inlet stage defines said prevacuum pump and is connected with said outlet of said turbomolecular pump via a blocked throttle, wherein, between adjacent stages of said vacuum pump, an intermediate inlet each is provided, wherein each intermediate inlet is connected with a different intake line of said sniffer probe and at least one of the intake lines as a suction line is connected with said inlet of said turbomolecular pump for obtaining different gas flows.

Abstract: A method of leak detection of hermetically sealed cavities semiconductor devices is provided. Scribe streets are formed with access from each packaged device on a first substrate to the edge of the first substrate. The first substrate is attached to a second substrate, forming gaps between the two substrates. A cavity is formed around a packaged device on the first substrate by attaching a bond ring to the first substrate and an optically transparent window above the bonding ring. The cavity is evacuated. A high powered laser beam strikes the top surface of the device on the first substrate within the cavity and creates a vertical surface displacement of the first substrate. The vertical surface displacement is monitored using a separate interrogation laser beam. Leakage of the cavity can be measured by characterizing the resonance decay rate, Q.

Abstract: A dual-filter dual-integrity test conduit assembly allows for in-situ testing of both filters with separate, duplicate systems for membrane integrity so that if the first tester filter fails, the second filter may be tested with a different, but identical method with its own gauges and nitrogen supply so as to further isolate malfunctions of the filter integrity test equipment as a cause for erroneous batch failures.

Abstract: Embodiments of the present invention provide phantoms, and associated methods of calibration which are suitable for use in both medical resonance imaging and radiographic imaging systems. A phantom for calibration of a medical imaging system, comprises a first component having a first outer shape, a portion of which defines part of at least one pocket; and a second component coupled to the first component and having a second outer shape, a portion of which defines another part of the at least one pocket. At least one of the first and second components comprises a reservoir, the reservoir having a shape at least a portion of which locates a center of the at least one pocket.

Abstract: Methods and systems are provided for detecting leaks in an intake manifold of an engine. In one example, a method may include closing all intake valves of all cylinders of the engine during an engine shut down responsive to vacuum in the intake manifold reaching a pre-determined vacuum level. The method may further include indicating a leak in the intake manifold responsive to a change in a level of vacuum in the intake manifold after closing all the intake valves of all cylinders.

Abstract: A method for helium mass spectrometric fine-leak test is based on quantitative determination of maximum test-waiting time, which gives a method for quantitative determination of the maximum test-waiting time for fine-leak test during a helium mass spectrometric test process of the sealability, and gives a method for determining the criterion for measured leak rate by taking the minimum helium gas exchange time constant, i.e., a rigour grade ?Hemin, of an acceptable sealed electronic component as a basic criterion for helium mass spectrometric fine-leak test. Based on the inventive method for quantitative determination of the maximum test-waiting time, for most of the cavity volume ranges, the maximum test-waiting time that is determined accurately may be much longer than 1 hour or 0.5 hour as determined qualitatively by the existing related standards.

Abstract: Gas evacuation systems for removing gas from flexible bags, and methods of using the systems, are disclosed.

Abstract: Method and/or system for an intelligent smoke sensor may comprise a sensor system configured to detect at least one of a plurality of predefined conditions, a processor coupled to the sensor system. The processor may be configured to generate an alarm indication in response to having detected at least one predefined condition. The intelligent smoke sensor system may comprise a recorder coupled to the processor. The recorder may be configured to record the alarm indication and the detected predefined conditions. The intelligent smoke sensor may comprise communication circuitry that mat be configured to communicate the alarm indication and the detected predefined condition to the network.

Abstract: There is provided a monitoring apparatus including a gas sampling apparatus and a sensor that detects a chemical substance included in gas obtained by the gas sampling apparatus. The gas sampling apparatus includes: an air supplying unit that forms an air curtain to form a space that covers a region to which an object to be monitored is included and which is separated from the outside environment; a sampling unit that extracts the gas inside the separated space; and a diffusion gas supplying unit that supplies, into the separated space, an amount of diffusion gas that is at least equal to the sampled amount of the sampling unit, wherein the sampling unit includes a plurality of sampling nozzles disposed at three-dimensionally different positions inside the separated space.

Abstract: A spectroscopic measuring device for minimizing spurious absorption due to undesired gases. The device includes a probe body, or a transmission cell formed from a central measurement cell and first and second probe bodies. Each probe body is subject to leakage of undesired gas, especially over time in the presence of high pressure gas. Each probe body includes a bore located between a primary window disposed at or near a distal end and a secondary window located at or near the proximal end. It being observed that the absorbance is proportional to the pathlength and inversely proportional to the volume as long as the pressure in the probe body remains low compared to that in the measurement cell, a glass filler rod is located in the bore and a is void located adjacent to the filler glass rod, thereby minimizing spurious absorption even in the presence of leakage.

Abstract: Systems and methods for smoke testing an evaporative emissions control system of a vehicle using exhaust gas are disclosed. In one example, a method for an engine comprises: during a first condition, routing exhaust gas to a sealed fuel system; and pressurizing the fuel system with the exhaust gas such that exhaust gas will escape from a leak in the fuel system. In this way, the location and the size of an evap system leak may be determined without the need for, and without using, expensive off-board testing equipment.

Abstract: A method for introducing an analyte gas into a cavity of an implantable medical device includes analyzing gas that exits the cavity through an outlet in communication with the cavity and introducing an analyte gas into the cavity via an inlet in communication with the cavity until the composition of the gas exiting the cavity comprises a predetermined percent or amount of the analyte gas. The inlet and outlet may be sealed, and the device may be leak tested.

Abstract: Provided is a leak testing method of a workpiece including spaces which are three partitioned void portions, the leak testing method being capable of separately learning an amount of leakage from each of the spaces, and precisely determining whether the workpiece is normal or defective. The leak testing method includes steps of obtaining total leakage amounts, and a step of calculating, based on the obtained total leakage amounts, a first leakage amount, a second leakage amount, a third leakage amount, a fourth leakage amount, a fifth leakage amount and a sixth leakage amount which are amounts of leakage from respective routes when gas is injected to a workpiece at a predetermined pressure.

Abstract: A moisture removing lamp for a vehicle that autonomously generates electricity and may be charged with electricity by using a solenoid generator that uses vibration of the vehicle, thereby removing moisture in the lamp for a vehicle in an environmentally-friendly manner.

Abstract: A method and system for testing an evaporative emission control system for leaks. The method begins by setting a variable reference orifice to a preselected diameter. Then, a vacuum pump evacuates a reference volume in the vicinity of the variable reference orifice. The reference volume is defined by the vacuum pump, and the reference orifice. Then, after a specified evacuation time, the method determines a pressure in the reference volume. That pressure is stored as the threshold test value. The method continues by evacuating the entire EVAP system for a predetermined time. A leak can then be identified if after the evacuation, the system pressure falls at least to the threshold test value. Switching the vacuum pump between the first and second positions is accomplished with a changeover valve having parallel airways configured for evacuating a small volume to the reference orifice and also evacuating the entire EVAP system.

Abstract: An apparatus and a method for detecting leakage from a composition-containing pouch during the high-speed manufacturing process. The apparatus comprises: a platen comprising a pouch cavity and a plurality of platen edges adjacent to the cavity; an image capturing unit; an image processing unit; and ultraviolet-light emitting source. The composition itself comprises a fluorescent whitening compound. The ultra-violet emitting light source is arranged to illuminate the cavity and plurality of platen edges. The image capturing unit is arranged to capture an image of the illuminated cavity and plurality of platen edges. The image capturing unit is communicably attached to the image processing unit.

Abstract: A portable, hand-held combination smoke machine and nitrogen generator having particular application for supplying a mixture of smoke and inert, non-combustible nitrogen gas to a closed fluid system (e.g., the evaporative or air brake system of a motor vehicle) so that the presence and location of a leak can be detected. The nitrogen generator is preferably a compact, commercially-available nitrogen generating membrane tube that is sized to be grasped and lifted in the hand of a user. The smoke machine has a smoke generator device that is adapted to produce smoke and is coupled to the nitrogen generating membrane tube so that a supply of nitrogen gas is delivered from the tube to the smoke generator device at which to be mixed with smoke. The nitrogen gas carries the smoke outwardly from the smoke generator device of the smoke machine to the system being tested for leaks.

Abstract: A fuel cell stack includes a first separator and a second separator. The first separator includes a first sandwiching section for sandwiching an electrolyte electrode assembly, a fuel gas supply section, and a first bridge section. A fuel gas supply passage extends through the fuel gas supply section in the stacking direction. The second separator includes a second sandwiching section for sandwiching the electrolyte electrode assembly, an oxygen-containing gas supply section, and a second bridge section. An oxygen-containing gas supply passage extends through the oxygen-containing gas supply section. A first displacement absorbing mechanism, a second displacement absorbing mechanism, a third displacement absorbing mechanism and a fourth displacement absorbing mechanism are provided in the fuel gas supply section, the oxygen-containing gas supply section, the first sandwiching section and the second sandwiching section for absorbing displacement generated in the fuel cell stack.

Abstract: A method and system for conducting leak detection in an evaporative emission control system. The method performs a pressure-based leak test at selected intervals. The pressure-based test includes pressurizing the system, using a pump. Then, the system monitors pressure for a selected period. If system pressure falls below a threshold value during the selected period, the system identifies an initial leak. Upon identifying the initial leak, the system substitutes a vacuum-based leak test at each selected interval. The vacuum-based test includes evacuating the system, using the pump. The system then monitors system pressure for a selected period. If system pressure rises above a threshold value during the selected period, then the system identifies a subsequent leak. Upon receiving notification that the initial leak has been repaired, the system returns to pressure-based leak testing. Where a single pump is used, that pump is configured both for system pressurization and evacuation.

Abstract: According to the method for controlling a filter (3) for an air intake duct of a turbine: the filter (3) is exposed to an incident flow of sprayed salt water; and parameters of the flow on either side of the filter, which are representative of the salt retention capability of the filter, are measured.