发明名称 |
MESSUNG DER RELATIVEN DICHTE VON GASEN |
摘要 |
A method and apparatus for measuring the relative density of a gas, for example natural gas. The gas is supplied through an inlet to a chamber and is output through an outlet. Using a control and an ultra-sonic transducer emitter and an ultra-sonic transducer receiver, the speed of sound in the gas corrected to standard conditions is calculated. Then, the control operates to measure the relative density RD of the gas using the formulawhere SoSsc is the speed of sound in the gas corrected to standard conditions, and a and b are constants. |
申请公布号 |
AT266865(T) |
申请公布日期 |
2004.05.15 |
申请号 |
AT19980935149T |
申请日期 |
1998.07.17 |
申请人 |
LATTICE INTELLECTUAL PROPERTY LIMITED |
发明人 |
HAMMOND, PAUL, STEPHEN;THURSTON, ROBERT, RICHARD |
分类号 |
G01N29/02;G01H5/00;G01N9/00;G01N9/24;G01N29/00;G01N29/024 |
主分类号 |
G01N29/02 |
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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