发明名称 |
Method of, and apparatus for, measuring the true contents of a cylinder of gas under pressure |
摘要 |
There is provided a method of, and apparatus for, measuring the mass of a gas under pressure using a piezoelectric oscillator. The gas is contained within a pressure vessel (100) having a fixed internal volume (V) and the piezoelectric oscillator (202) is immersed in the gas within the pressure vessel (100). The method comprises: a) utilising said piezoelectric oscillator (202) to measure the density of the gas within the high-pressure vessel (100); b) determining, from the density measurement and from the internal volume (V) of said pressure vessel, the mass of the gas within the pressure vessel (100). By providing such a method, the true contents (i.e. mass) of fluid in a pressure vessel such as a cylinder can be measured directly without the need to compensate for factors such as temperature or compressibility. This allows a determination of mass through direct derivation from the density of the gas in the cylinder, reducing the need for additional sensors or complex calculations to be performed. |
申请公布号 |
EP2458344(A1) |
申请公布日期 |
2012.05.30 |
申请号 |
EP20100192962 |
申请日期 |
2010.11.29 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
DOWNIE, NEIL ALEXANDER;BEHRENS, MARCEL;OBADUN, LATEEF OLUSEGUN ADIGUN |
分类号 |
G01F1/86;F16K37/00;F17C1/00;F17C13/02;G01F15/06;G01G17/04;G01G17/06;G01N9/00 |
主分类号 |
G01F1/86 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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