FIELD: measurement technology. SUBSTANCE: device has two reference vessels 3 and 10 which are connected to vessel 1 under test through slack hermetic membrane 2 with rigid center 7. Fitted between vessels 3 and 10 is acoustic filter 15 connected with control valve 14. EFFECT: enhanced reliability. 1 dwg
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| BALL CHECKING METHOD | 1999 |
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Authors
Dates
1996-03-27—Published
1992-07-06—Filed