Antig Technology Co., Ltd.

Ya-Chien Chuang

Feng-Yi Deng

Hsi-Ming Shu

Yi-Hsien Chen

Yu-Lin Tang

A concentration detector is disclosed, which is adapted to detect a concentration of a liquid fuel in a container. The concentration detector includes a rotating means positioned underneath a level of a liquid fuel and rotatable at an angle &#x3b8; on a X-Y plane. The rotating means includes at least three floating objects connected with each other. Each floating object has a specific gravity less than a specific gravity of the liquid fuel &#x3c1;. The floating objects are balanced according to a torque equation, F(&#x3b8;,&#x3c1;)=0, such that the rotating means is still under the level of the liquid fuel. While a concentration of the liquid fuel is changed and the angle &#x3b8; of the rotating means is detected, the specific gravity of the liquid fuel &#x3c1; is obtained from the torque equation, F(&#x3b8;,&#x3c1;)=0, and thereby computing the concentration of the liquid fuel.

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Taipei, Taiwan

Ya-Chien Chuang