tracer gas

tracer gas

[′trā·sər ‚gas]
(engineering)
In vacuum testing for leaks, a gas emitting through a leak in a pressure system and subsequently conducted into the detector.
References in periodicals archive ?
The measurements of the ventilation efficiency of PERMICS-LOS1 in the test chamber using a tracer gas technique with the tracer gas carbon dioxide ([CO.sub.2]) were made.
Tracer gas, Freon R134a, was used to simulate pollution in the room air.
To determine [E.sub.r], an alternate equation was derived for use with tracer gas measurements.
The model calibration process used test data from tracer gas testing of residential ventilation systems in a new single-family house near Sacramento, California.
Exhaust dispersion levels can be evaluated using numerical methods, or physical scale modeling testing in a boundary layer wind tunnel using tracer gas. For the scenario of laboratory exhaust stacks, the selection of the appropriate modeling tool will depend on the geometry of the building and the site context.
In the current study, we compare the different ventilation concepts with respect to the local and global ventilation efficiency, which were measured under northern European summer conditions (ambient temperature ~20[degrees]C (68[degrees]F)), using water as tracer gas. Further, steady performance under winter, spring/fall and summer conditions was accessed by adding a jacket heating/cooling system based on capillary tubes to the GCC.
The experiment used the ASHRAE 110 tracer gas test standard using sulfurhexaflouride ([SF.sup.6]), and a Miran Series 205B ambient air analyzer that detected tracer gas in parts per billion (ppb) (Meisenzahl 2014, ASHRAE 1995).
The sniffing device can handle manual and robot-assisted leak detection in environments with high levels of tracer gas, providing both selectivity and sensitivity.
During the process offered by the Swedish company, the tube is filled with the product along with a tracer gas. harmless hydrogen, and sealed.
A tracer gas [N.sub.2]O is used to represent the gaseous substances exhaled by the source manikin.