Patent ID: 9733115
Date: 2017-08-15
CPC Classifications: G01F,G01N

Claim:
1. An analyzer comprising: a reagent installation section in which a container is installable, the container being storable of a liquid inside; an aspirating tube operable to travel up-and-down in the container to aspirate the liquid from the container installed in the reagent installation section; a drive part configured to drive the aspirating tube to travel up-and-down in the container; a detector configured to detect a change of a physical property of the aspirating tube attributable to an interaction between the aspirating tube and environmental objects surrounding the aspirating tube; and a controller programmed to operate the drive part to drive the aspirating tube to travel up-and-down and read detection signals from the detector during descending or ascending of the aspirating tube, the controller having a memory configured to that stores first detection signals obtained from the detector during a first operation including descending or ascending the aspirating tube in an environment exclusive of the liquid, the controller further programmed to: perform a second operation for operating the drive part to drive the aspirating tube to descend inside the container containing the liquid; subtracting the first detection signals from second detection signals from the detector during the second operation, and identify a change of the second detection signals attributable to a contact of the aspirating tube with a surface of the liquid in the container to detect a liquid level of the liquid position in the container.