Calibration of reference leaks
Helium leaks
We perform the calibration of helium reference leaks used in mass spectrometer leak detectors.
We have a set of high stability capillary leaks as standards. Comparison is done by an Adixen ASM142D leak detector.
We follow the procedure described in EN 13192, methods A and B.
Calibration range is 10-8 mbar L/s to 10-5 mbar L/s (10-7 Pa m3/s to 10-4 Pa m3/s).
For best uncertainty, check http://www.ipac.pt/pesquisa/ficha_lac.asp?ID=M0048
Leaks with other gases
We calibrate leaks of any gas with delivery to atmosphere. We follow EN 13192 method C.
The range is 10-6 mbar L/s to 10-4 mbar L/s (10-5 Pa m3/s to 10-5 Pa m3/s).
For larger leaks we use the method V∆p.
