Patent ID: 9529009
Filing Date: 2016-12-27
CPC Classification: G01F,G01N

Claim Text:
1. An automatic analyzer that analyzes a plurality of samples comprising: a plurality of dispensing probes each configured to dispense liquid samples or liquid reagents; a plurality of vertical moving mechanisms that are each provided for each of the plurality of dispensing probes and that move up and down the plurality of dispensing probes; a plurality of oscillators that are each configured to supply, to a dispensing probe of the plurality of dispensing probes, individually, alternating voltages having a specific frequency difference therebetween; frequency attenuators that are each provided for each of the plurality of oscillators and are configured to attenuate the specific range of frequency components caused by alternating voltages at the dispensing probes; and liquid level detection determining units that are each provided for each of the plurality of dispensing probes and are configured to determine, from voltage changes caused by the plurality of probes contacting liquid, whether or not the dispensing probes have contacted liquid surfaces of the liquid samples or the liquid reagents based on signals output from the frequency attenuators, the liquid level detection determining units configured to stop the movement operations of the vertical moving mechanisms when the liquid level detection determining units determine that the dispensing probes have contacted the liquid surfaces.