| 摘要 |
The method and apparatus for determining the density of a gas by measuring the time for a predetermined its flow through a sub-sonic square-root restrictor, such as a venturi, the rate of increase or decrease of the pressure in a reference chamber, a semi-continuous measurement means utilizing a motor driven, constant rate-of-movement piston being disclosed as well as a continuous density measurement means including a sub-sonic square-root restrictor followed, in fluid flowing fashion by a sonic restrictor venting to the atmosphere.
|
