Over deze norm
This standard specifies terms and methods for the characterization of leak detectors that use a mass spectrometer (MSLD). It is not intended to give a complete set of specifications for an acceptance test but describes procedures that can be used without particular calibration equipment. This standard is applicable to complete leak detectors using a mass spectrometer. Such instruments are able to selectively measure the flow of a tracer gas. In most cases the tracer gas will be helium, flowing into or out of a leak. A leak detector in this sense has an integral high vacuum system for maintaining the sensing element (mass spectrometer) at low operating pressure and for establishing a partial pressure related to the incoming gas flow. This pressure is measured quantitatively by the mass spectrometer. The methods described in this standard are applicable without restriction to helium as the tracer gas. For other gases, additional precautions may be necessary. The methods discussed herein are applicable to commonly-available leak detectors, based on the present level of technology, which may be able to measure leak rates down to 10-12 Pa m3/s.
|Nederlandse titel||Niet-destructief onderzoek - Beproeving op dichtheid - Karakterisering van massaspectrometrische lekdetectoren|
|Engelse titel||Non-destructive testing - Leak testing - Characterization of mass spectrometer leak detectors|
|Vervangen door||Normatieve verwijzingen||