Use leak detector of helium mass spectra to undertake the method of leak hunting has: Gush blows law, helium to overspread law of law, leak hunting case, suck marksmanship, fill pressure law, back pressure law, accumulate law of way of stand of law, alternative bleed law, leak hunting, refluent leak hunting and standard leaks to compare a standard. The equipment of all sorts of methods, measure and leakage rate see a table 11.
In leak hunting process. Should notice to adjust instrument actuating pressure and helium peak, notice often calibration instrument sensitivity, the attention reduces instrument background and background noise, so that assure the sensitivity of law of leak hunting of leak detector of helium mass spectra.
[Express law of get sth others ignored of 11 helium mass spectrograph]
