| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid container capable of measuring a liquid level in a short time without being affected by a dead band of an ultrasonic sensor even when the liquid level is low.SOLUTION: The liquid container includes: a container body 1 for storing liquid; an ultrasonic sensor 2 that is in contact with the outer wall of the container body 1 and is installed so that ultrasonic wave is transmitted into the liquid; and a reflecting means 3 that is installed in the inner bottom of the container body 1 and reflects, toward the liquid surface, the ultrasonic wave transmitted from the ultrasonic sensor 2 into the liquid. The reflecting means 3 is installed at a position at which the distance the ultrasonic wave travels through the liquid is longer than the distance of the dead band of the ultrasonic sensor 2 in an ultrasonic wave path from the ultrasonic sensor 2 to the reflection plane of the reflecting means 3. |
