Development of a Temperature-Compensated Ultrasonic Liquid-Level Meter
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- Ogawa Shigeki
- NTT
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- Kuwano Hiroki
- NTT
Bibliographic Information
- Other Title
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- 温度補償型超音波式液面レベル計の開発
- オンド ホショウガタ チョウオンパシキ エキメン レベルケイ ノ カイハツ
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Description
Methods to remotely monitor and check underground fuel tanks are strongly needed from the viewpoint of environmental protection. This paper presents our temperature-compensated ultrasonic liquid-level meter. By connecting the meter to a telecommunications network, the liquid level in a remotely located tank can be continuously monitored. In our ultrasonic liquid-level meter, we use a reflection ring at the reference position to compensate for measurement error caused by changes of atmospheric temperature. The maximum measurement error is within ±5mm from −10°C to +20°C at a measurement distance of 2000mm. With regard to long-range measurement accuracy, the maximum error has remained within ±2mm over 1.5 years at a measurement distance of 2200mm. In this paper, the structure of the meter, the reflection ring, the configuration of the detection circuit, the superposed signal of transmission and reception, and experimental results are shown.
Journal
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- IEEJ Transactions on Sensors and Micromachines
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IEEJ Transactions on Sensors and Micromachines 122 (9), 447-451, 2002
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390282679438643456
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- NII Article ID
- 10009583748
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- NII Book ID
- AN1052634X
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- ISSN
- 13475525
- 13418939
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- NDL BIB ID
- 6284217
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed