NEN EN 13192 : 2001

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of leaks
   4.1 Permeation leak
   4.2 Conductance leaks
5 Apparatus
   5.1 Mass Spectrometer Leak Detector (MSLD), for methods
        A and B
   5.2 Capillary measurement tube equipment for method C
6 Calibration by comparison (method A and B)
   6.1 Preparation of leaks and apparatus
   6.2 Measurement
7 Calibration by direct flow measurement (method C)
   7.1 Preparation of leaks and apparatus
   7.2 Measurement
8 Results
   8.1 Evaluation for methods A and B (comparison)
   8.2 Evaluation for method C (direct flow measurement)
9 Report
10 Labelling of reference leaks
11 Handling of reference leaks
   11.1 Permeation leaks (normally with reservoir fitted the
        leak outlet)
   11.2 Conductance leaks (normally without reservoir)
Annex A (informative) Calculation of leakage rate decrease
        due to tracer gas depletion in the reservoir
Bibliography

Defines the calibration of those leaks that are used for the adjustment of leak detectors for determining the leakage rate in everyday use. Leakage rates more than 10[-4] Pa.m[3]/s can be measured by flow meters calibrated against primary national standards.