| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique which enhances the resistance to disturbance and which measures a level of liquid stored in a container with high accuracy in a simple configuration.SOLUTION: A liquid level measuring device 10 includes: vibration propagation members 12 immersed in a liquid 32 in such a manner that a part of the members is exposed from a liquid surface 31; a piezoelectric element 11 which is provided on ends of the vibration propagation members 12 and which propagates a vibration 33 in a longitudinal direction of the members; and a signal processor 20 guiding a liquid level on the basis of a propagation time of the vibration 33 reflected on the liquid surface 31. |
