tracer gas การใช้

• The tracer gas is helping scientists measure swirling air motions.
• Sulfur hexafluoride is also routinely used as a tracer gas in laboratory fume hood containment testing.
• Since 1 January 2006, is banned as a tracer gas and in all applications except high-voltage switchgear.
• At the same time, Mir's cosmonauts will inject a tracer gas into the station's sealed off Spektr module.
• The vacuum system will carry any tracer gas molecule into the analyzer cell of the magnetic sector mass spectrometer.
• To detect this, helium is often in the inert atmosphere inside the packaging as a tracer gas to detect leaks during testing.
• Discovery pilot Dominic Gorie eased the shuttle to a point 240 feet in front of Mir while the cosmonauts flooded the damaged Spektr with a greenish tracer gas.
• Sixty environmental experts from government labs and universities are using portable weather stations to measure the tracer gas as it blows over and around the city's tallest buildings.
• Because helium diffuses through solids three times faster than air, it is used as a tracer gas to detect leaks in high-vacuum equipment ( such as cryogenic tanks ) and high-pressure containers.
• The test gas is held in the lung for about 10 seconds during which time the CO ( but " not " the tracer gas ) continuously moves from the alveoli into the blood.
• This test gas mixture contains a small amount of carbon monoxide ( usually 0.3 % ) and a " tracer gas " that is freely distributed throughout the alveolar space but which doesn't cross the alveolar-capillary membrane.