发明名称 |
UREA CONCENTRATION IDENTIFICATION DEVICE FOR UREA SOLUTION |
摘要 |
<p>A urea concentration identification device comprising a concentration identification sensor unit (2) and a support unit (4) attached at the bottom end thereof with this sensor unit and provided at the top end thereof with a mounting unit (4a) to a urea solution tank opening. The concentration identification sensor unit (2) has an indirectly-heated concentration detector and liquid temperature detector provided with metal fins (21c),(22c), respectively, for heat-exchanging with urea solution. The concentration identification sensor unit (2) is provided with a cover member (2d) that forms an opposite-ends-opened urea solution induction passage so as to surround the metal fins (21c),(22c). A single-pulse voltage is applied to the heating element of the indirectly-heated concentration detector to heat it, and a urea concentration is identified at an identification operation unit based on an output from a concentration detection circuit including the temperature sensing element of the indirectly-heated concentration detector and the liquid temperature detector.</p> |
申请公布号 |
EP1669743(B1) |
申请公布日期 |
2013.10.09 |
申请号 |
EP20040787854 |
申请日期 |
2004.09.10 |
申请人 |
MITSUI MINING & SMELTING CO., LTD. |
发明人 |
INOUE, SHINICHI;KUBOTA, AKIKO;TAKAHATA, TAKAYUKI |
分类号 |
G01N25/18;F01N3/08;F01N3/20 |
主分类号 |
G01N25/18 |
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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