Wüest M. 51 Wykes M. 82 Yamaguchi M. 17 Ybarra G. 129 Yubero F ...
Wüest M. 51 Wykes M. 82 Yamaguchi M. 17 Ybarra G. 129 Yubero F ...
Wüest M. 51 Wykes M. 82 Yamaguchi M. 17 Ybarra G. 129 Yubero F ...
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JUNE 27 TUESDAY MORNING<br />
WS-18-TuM-OR.6 LEAK CALIBRATION BY COMPARISON WITH REFERENCE<br />
STANDARD LEAKS. J. M. Hidalgo * and J. L. de Segovia ** * Telstar Industrial S. L., José Tapiolas<br />
120, Tarrasa, Spain. ** Instituto de Ciencia de Materiales, CSIC, Cantoblanco, 2<strong>82</strong>49 Madrid,<br />
Spain.<br />
e-mail: jldesegovia@icmm.csic.es/j.mhidalgo@telstar.es<br />
For an industrial calibration laboratory the faster and reproducible method for helium leak calibration<br />
is by comparing the leak to be calibrated with standard leaks already calibrated at a National<br />
Calibration Laboratory or Accredited Laboratory, using a mass spectrometer tuned to Helium gas. In<br />
the present work all the possible sources of uncertainties are discussed and they relative contributions<br />
presented. Special consideration is given to the problem of the long term satiability contribution.<br />
The optimal capacity of measurement is obtained according to the results obtained by application<br />
of the specific calibration procedure.<br />
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