| 发明名称 |
CRYOGENIC LIQUID LEVEL SENSING APPARATUS |
| 摘要 |
Method and apparatus for measuring the level of a cryogenic liquid in a container using frequency pulses. The time interval between the transmitted and echoed pulse is measured and compared with predetermined store values which are characteristics of the container of known geometry.
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| 申请公布号 |
CA2028670(A1) |
申请公布日期 |
1991.06.27 |
| 申请号 |
CA19902028670 |
申请日期 |
1990.10.26 |
| 申请人 |
BARNSTEAD THERMOLYNE CORPORATION |
发明人 |
SMITH, DENNIS H. |
| 分类号 |
G01F23/28;G01F23/296;(IPC1-7):G01F23/28 |
主分类号 |
G01F23/28 |
| 代理机构 |
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代理人 |
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