| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid quantity detection device and an automatic analyzer capable of detecting simply the quantity of liquid dispensed into a container. SOLUTION: In the liquid quantity detection device and the automatic analyzer, the quantity of liquid held in the container having an opening is detected by utilizing a resonance phenomenon of a sound wave. The liquid quantity detection device 20 includes a sound wave generation source 21 for irradiating the sound wave toward the opening 7a, a control device 23 for controlling the frequency of the sound wave irradiated by the sound wave generation source, a receiver 24 for measuring a resonance sound generated by resonance of an air column in the container caused by the sound wave irradiated by the sound wave generation source, a detector 25 for detecting a resonance frequency of the resonance sound measured by the receiver, and a liquid quantity determination part 26 for determining the quantity of the liquid held in the container based on the detected resonance frequency. COPYRIGHT: (C)2009,JPO&INPIT |
