Automatic analyzer

An automatic analyzer, comprising:

• a conveyance line for conveying a loaded sample container;
• an identification information reading device adapted to read identification information attached to the sample container;
• and
• a container height detection device adapted to detect a height of the sample container,
• wherein the identification information reading device and the container height detection device are adapted to perform reading and detection when the sample container is at a common position on the conveyance line,
• the container height detection device includes a plurality of sensors having different height ranges for a detection target, each of the plurality of sensors being adapted to detect the presence of the sample container as the detection target by sensing light reflected from the sample container when the sample container is at the common position on the conveyance line,
• a part of the plurality of sensors is disposed on the same side as the identification information reading device with respect to the conveyance line, and
• the rest of the plurality of sensors are disposed on the opposite side of the identification information reading device with respect to the conveyance line.