发明名称 |
ULTRASONIC LIQUID LEVEL SENSING SYSTEM |
摘要 |
An ultrasonic probe having ultrasonic sensors (e.g., piezoelectric crystals) for measuring the level of liquid within a sealed container and having features that make the probe more reliable and enable more precise liquid level readings as the container nears an empty state. Embodiments include spacing the ultrasonic sensors more closely at the lower end of the probe, offsetting the sensors to enable tighter vertical spacing, matched pairs of sensors for redundancy, and a downward facing sensor located at the lower end of the probe to decrease the minimum liquid level that can be accurately measured by the probe. A sump may also be provided to further decrease the minimum liquid level that can be accurately measured by the probe. |
申请公布号 |
EP2990770(A3) |
申请公布日期 |
2016.07.20 |
申请号 |
EP20150183041 |
申请日期 |
2015.08.28 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
BIRTCHER, CHARLES MICHAEL;STEIDL, THOMAS ANDREW |
分类号 |
G01F23/296 |
主分类号 |
G01F23/296 |
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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