ASTM E493/E493M
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Standard Practice for Leaks Using the Mass Spectrometer Leak Detector in the Inside-Out Testing Mode
| Published by | Publication Date | Number of Pages |
| ASTM | 06/01/2022 | 3 |
ASTM E493/E493M – Standard Practice for Leaks Using the Mass Spectrometer Leak Detector in the Inside-Out Testing Mode
1.1”This practice2 covers procedures for testing devices that are sealed prior to testing, such as semiconductors, hermetically enclosed relays, pyrotechnic devices, etc., for leakage through the walls of the enclosure. They may be used with various degrees of sensitivity (depending on the internal volume, the strength of the enclosure, the time available for preparation of test, and on the sorption characteristics of the enclosure material for helium). In general practice the sensitivity limits are from 10”’10 to 10”’6 Pa m³/s (10”’9 standard cm³/s to 10”’5 standard cm³/s at 0”C) for helium, although these limits may be exceeded by several decades in either direction in some circumstances.
Product Details
- Published:
- 06/01/2022
- Number of Pages:
- 3
- File Size:
- 1 file , 67 KB
- Note:
- This product is unavailable in Russia, Ukraine, Belarus
