Background Leakage of Pressure Leak Calibration Caused by Temperature Change

Yan Feng; Rui Fang Zhang; Xue Min Sheng; Meng Dong; Lan Zhao

doi:10.4028/www.scientific.net/AMM.303-306.339

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 303-306Background Leakage of Pressure Leak Calibration...

Background Leakage of Pressure Leak Calibration Caused by Temperature Change

Abstract:

On laboratory conditions，background leakage caused by temperature change was one of the most important factors for affecting calibration of pressure leak, consequently, the constant temperature water bath of the calibration apparatus has been used to reduce background leakage by means of keeping the apparatus temperature constant. The method of active and passiveness were combined to keep constant temperature. through the research on experimentation, it was found that background leakage was decreased to the grade of 1.36×10-9Pam3/s when constant temperature been used, and meanwhile the lower limiting of pressure leak was extended to 2.667×10-8Pam3/s.

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Periodical:

Applied Mechanics and Materials (Volumes 303-306)

Pages:

339-343

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.303-306.339

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Online since:

February 2013

Authors:

Yan Feng, Rui Fang Zhang, Xue Min Sheng, Meng Dong, Lan Zhao

Keywords:

Background Leakage, Constant Temperature, Constant Temperature Water Bath, Pressure Leak

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