In addition, the Leak Project will measure temperature coefficients for permeation leaks and measure either open or closed reservoir leaks. A fundamental leak measurement uses a calibration technique whose measured quantities are units of time, pressure, temperature, and volume.
Direct comparison measures an unknown artifact relative to a calibrated gas leak standard.
Leak Compare II system uses Leybold Ultratest F helium leak detector, inlet manifold and temperature chambers. A set of Brooks precision bore tubes are used for calibrating volumes from 10 to 4000 cc. 7.0 Helium Selected Acomplishments Developed first primary leak standards in the 1960's in response to demands from Atomic Energy Commission for precision measurements of leaks in the vacuum flow regime. Pioneered developments in field of leak calibration technology. Published extensively in the Journal of Vacuum, Science, and Technology, documenting contributions to leak calibration technology.