Abstract: A cleaning device includes a discharge nozzle that discharges cleaning liquid; a suction nozzle that sucks the cleaning liquid or reaction liquid in the cleaning tank or the reaction vessel; a discard vessel connected to the suction nozzle via a pipe to discard the cleaning liquid or the reaction liquid; a detecting unit that detects whether an electrostatic capacity at least between the suction nozzle and an electrode provided in the pipe exceeds a threshold value; a determination unit that determines that the suction nozzle is clogged when a time difference between a time, at which the electrostatic capacity exceeds the threshold value when the suction nozzle is not clogged, and a time, at which the electrostatic capacity exceeds the threshold value at the time of determination, is not less than a predetermined time difference threshold value; and a control unit that stops the discharge nozzle from discharging the cleaning liquid to the reaction vessel when the suction nozzle is clogged.

Abstract: A cleaning device includes a discharge nozzle that discharges cleaning liquid; a suction nozzle that sucks the cleaning liquid or reaction liquid in the cleaning tank or the reaction vessel; a discard vessel connected to the suction nozzle via a pipe to discard the cleaning liquid or the reaction liquid; a detecting unit that detects whether an electrostatic capacity at least between the suction nozzle and an electrode provided in the pipe exceeds a threshold value; a determination unit that determines that the suction nozzle is clogged when a totalizing time, for which the electrostatic capacity exceeds the threshold value during a preset clogging determination time, is longer than a totalizing time, for which the electrostatic capacity exceeds the threshold value during a preset normal determination time; and a control unit that stops the discharge nozzle from discharging the cleaning liquid to the reaction vessel when the suction nozzle is clogged.

Abstract: An automatic analyzer includes a wastewater suction unit that causes a suction nozzle to suction a reaction wastewater from each of plural reaction vessels transferred to a disposal position, transfers the plural suction nozzles to a cleaning position to make the suction nozzles suction a cleaning liquid, and clean the suction nozzles. The wastewater suction unit includes a pressure detector that is arranged near the suction nozzle in a pipe that guides a negative pressure for suction to each of the suction nozzles to detect pressure in each of the suction nozzles at time of suctioning of the reaction wastewater, a vessel determination unit that determines whether the reaction vessel is present or not at the disposal position, and a clog determination unit that determines whether each of the suction nozzles is clogged or not based on change in pressure in the suction nozzle and presence/absence of the reaction vessel.

Abstract: An analyzer (1) comprises: a detecting section (254) for continuously detecting the capacitance between an electrode (253) provided in a nozzle cleaning tank (252) and a suction nozzle (251b) ; a determining section (45) for determining whether the suction nozzle (251b) is clogged or not based on the time dependency of capacitance detected at the detecting section (254), that is the time dependency of capacitance between the suction nozzle (251b), which is raised out of the nozzle cleaning tank (252) after BF cleaning liquid (Lw) is sucked, and the electrode (253); and a controlling section (41) for stopping the discharge of the BF cleaning liquid from an discharge nozzle (251a) into a reaction tube (10) when it is determined by the determining section (45) that the suction nozzle (251b) is clogged.

Abstract: A cleaning device includes a discharge nozzle that discharges cleaning liquid; a suction nozzle that sucks the cleaning liquid or reaction liquid in the cleaning tank or the reaction vessel; a discard vessel connected to the suction nozzle via a pipe to discard the cleaning liquid or the reaction liquid; a detecting unit that detects whether an electrostatic capacity at least between the suction nozzle and an electrode provided in the pipe exceeds a threshold value; a determination unit that determines that the suction nozzle is clogged when a totalizing time, for which the electrostatic capacity exceeds the threshold value during a preset clogging determination time, is longer than a totalizing time, for which the electrostatic capacity exceeds the threshold value during a preset normal determination time; and a control unit that stops the discharge nozzle from discharging the cleaning liquid to the reaction vessel when the suction nozzle is clogged.

Abstract: A cleaning device includes a discharge nozzle that discharges cleaning liquid; a suction nozzle that sucks the cleaning liquid or reaction liquid in the cleaning tank or the reaction vessel; a discard vessel connected to the suction nozzle via a pipe to discard the cleaning liquid or the reaction liquid; a detecting unit that detects whether an electrostatic capacity at least between the suction nozzle and an electrode provided in the pipe exceeds a threshold value; a determination unit that determines that the suction nozzle is clogged when a time difference between a time, at which the electrostatic capacity exceeds the threshold value when the suction nozzle is not clogged, and a time, at which the electrostatic capacity exceeds the threshold value at the time of determination, is not less than a predetermined time difference threshold value; and a control unit that stops the discharge nozzle from discharging the cleaning liquid to the reaction vessel when the suction nozzle is clogged.

Abstract: An automatic analyzer includes a wastewater suction unit that causes a suction nozzle to suction a reaction wastewater from each of plural reaction vessels transferred to a disposal position, transfers the plural suction nozzles to a cleaning position to make the suction nozzles suction a cleaning liquid, and clean the suction nozzles. The wastewater suction unit includes a pressure detector that is arranged near the suction nozzle in a pipe that guides a negative pressure for suction to each of the suction nozzles to detect pressure in each of the suction nozzles at time of suctioning of the reaction wastewater, a vessel determination unit that determines whether the reaction vessel is present or not at the disposal position, and a clog determination unit that determines whether each of the suction nozzles is clogged or not based on change in pressure in the suction nozzle and presence/absence of the reaction vessel.