| 摘要 |
A concentration-sensing device is provided to prevent sensing errors causable by impurities within a solution by using a protecting chamber, and to measure the exact concentration of a fuel solution in a low cost. A concentration-sensing device includes: a concentration sensor(200) with a momentum measurement manner of molecules in a solution; and a protecting chamber(202) for preventing impurity particles from being collided with the concentration sensor. The concentration sensor comprises: a collision sensing part which is placed within the solution and senses the collision of solution-constituting particles; and a variable resisting part which varies resistance according to collision perception of the collision sensing part. |
