发明名称 |
Measuring equipment for acoustic determination of the specific gravity of liquids |
摘要 |
The invention relates to a measuring probe for the acoustic determination of the specific gravity of a liquid. The probe includes a holder to which is attached at opposite ends thereof a ceramic piezoelectric transducer disc and a reflector disk. A reference element having a known acoustical impedance has one end thereof abutting the transducer disc and the other end thereof spaced from the reflector disc to form a sampling space therebetween.
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申请公布号 |
US4297608(A) |
申请公布日期 |
1981.10.27 |
申请号 |
US19800145620 |
申请日期 |
1980.05.01 |
申请人 |
DANFOSS A/S |
发明人 |
JENSEN, BORGE R. |
分类号 |
G01N9/24;G01N29/00;G01N29/02;G01N29/09;G01N29/30;(IPC1-7):H01L41/08 |
主分类号 |
G01N9/24 |
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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