A refrigerant detector testing system according to aspects of the disclosure includes a metering orifice formed in a suction line that is disposed between an evaporator coil and a compressor, a valve fluidly coupled to the metering orifice, a connecting tube fluidly coupled to the valve on a side opposite the metering orifice, a mixing device having an input orifice fluidly coupled to the connecting tube. In some embodiments, the mixing device includes an air intake disposed proximate the input orifice, a throttling portion downstream of the input orifice and the air intake, the throttling portion having a reduced cross-sectional area, and a diffuser section positioned downstream of the throttling portion, the diffuser section having an output orifice. According to aspects of the disclosure, a refrigerant detector fluidly exposed to the output orifice.

System and method for monitoring hydrogen flux across the wall of a vessel or pipe, the system including a monitored volume for sealing an attachment to an outside surface of the wall of the vessel or pipe for collecting hydrogen escaping across the wall surface; a membrane selectively permeable to hydrogen in fluid communication with the monitored volume for permitting hydrogen to escape from the monitored volume in between the two at a defined rate such that hydrogen pressure equilibrium may be reached in the monitored volume for a given hydrogen flux across the wall surface of the vessel or pipe; a pressure measuring device in fluid communication with the monitored volume for measuring hydrogen pressure in the monitored volume; and a temperature measuring device in fluid communication with the monitored volume for measuring temperature in the monitored volume.

Example computer systems, computer apparatuses, computer methods, and computer program products are disclosed for testing an ultrasonic gas leak detection device. An example method includes determining a rotary position of a rotary selector of the handheld ultrasonic testing device. The method further includes determining whether the rotary position of the rotary selector corresponds to a first testing mode for testing the ultrasonic gas leak detection device or a second testing mode for testing the ultrasonic gas leak detection device. The method further includes generating a first ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the first testing mode. The method further includes generating a second ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the second testing mode.

A filter assembly and a method of operating the same to detect water leaks are provided. The filter assembly includes a filter housing for receiving a filter cartridge and at least partially defining a drain trough positioned below the filter cartridge for collecting leaked water. A light source is positioned proximate the drain trough for directing light through the drain trough and a light sensor positioned proximate the drain trough for sensing the light directed through the drain trough. A controller uses the light sensor to monitor the light generated by the light source and determines that a leak exists when an intensity of sensed light is reduced by the leaked water.

In some embodiments, a computer system generates display content indicating a likely direction and estimated distance to a potential gas leak source. The content includes a street map and at least one search area indicator on the map that indicates a search area suspected to have a gas leak source. The search area indicator has an axis indicating a representative wind direction relative to a geo-referenced location of at least one gas concentration measurement point. The search area indicator also has a width relative to the axis. The width is indicative of a wind direction variability associated with a plurality of wind direction measurements in an area of the gas concentration measurement point. The axis also preferably has a length indicating an estimated maximum distance to the potential gas leak source.

A refrigerant detector testing system according to aspects of the disclosure includes a metering orifice formed in a suction line that is disposed between an evaporator coil and a compressor, a valve fluidly coupled to the metering orifice, a connecting tube fluidly coupled to the valve on a side opposite the metering orifice, a mixing device having an input orifice fluidly coupled to the connecting tube. In some embodiments, the mixing device includes an air intake disposed proximate the input orifice, a throttling portion downstream of the input orifice and the air intake, the throttling portion having a reduced cross-sectional area, and a diffuser section positioned downstream of the throttling portion, the diffuser section having an output orifice. According to aspects of the disclosure, a refrigerant detector fluidly exposed to the output orifice.

A method for classifying an emission includes generating a first acoustic profile at a first acoustic sensor; generating a second acoustic profile at a second acoustic sensor; comparing the first acoustic profile to a first reference acoustic profile to generate a first difference; comparing the second acoustic profile to a second reference acoustic profile to generate a second difference; and classifying the emission as one of a hazardous emission or a non-hazardous emission in response to the first difference and the second difference.

A method for characterization of a calibrated defect of a film of a bag for biopharmaceutical fluid comprises a bag film sample (3) with a calibrated defect is installed in a test device (1), a leak test is applied to the bag film sample (3) provided with a calibrated defect, in the test device (1), by applying controlled fluid stresses to the bag film sample (3) provided with a calibrated defect, a result of the leak test is measured, and characteristics of the bag film sample (3) provided with a calibrated defect, characteristics of the controlled fluid stresses, and the result of the leak test are recorded in a database (16).

A method for calibrating a test chamber, which encloses an interior volume (20), is designed as a film chamber (12) comprising at least one flexible wall region (14, 16), and is connected in a gas-conducting way to a pressure sensor (30), to a vacuum pump (26), and via a calibration valve (34) to a calibration chamber (36) enclosing a calibration volume (37), comprising the following steps: evacuating the film chamber (12); measuring the pressure difference inside of the film chamber (12); after the evacuation has been completed, connecting the calibration volume (37) in a gas-conducting manner to the interior volume (20) of the film chamber (12) while measuring the pressure change, wherein the pressure in the calibration chamber (36) is greater than the pressure in the film chamber (12) before the connection to the film chamber (12). A corresponding device is likewise disclosed.

The present invention relates to a method for a measurement system configured to test a flexible bio-process bag, the method comprising providing at least one flexible bio-process bag having a volume, wherein the at least one flexible bio-process bag is initially filled with a gas and inflated to a reference pressure (Pu), obtaining a leak model, obtaining baseline information, wherein the baseline information comprises at least a weighed first mass value (m.sub.baseline) and a first time value (t.sub.1), obtaining evaluation information, wherein the evaluation information comprises at least a weighed second mass value (m.sub.evaluation) and a second time value (t.sub.2), testing the flexible bio-process bag based on the leak model, the baseline information and the evaluation information.