Device with deuterium lamp and liquid chromatograph

A device in which a deuterium lamp including an anode and a cathode is used as a light source, the deuterium lamp being configured to emit light by causing a discharge between the anode and the cathode, the device comprising:

• a heater configured to preheat the deuterium lamp;
• a lamp drive unit configured to apply a trigger voltage between the anode and the cathode of the deuterium lamp to cause a discharge and configured to flow a constant current between the anode and the cathode after generation of a main discharge between the anode and the cathode to maintain the main discharge;
• a heater drive unit configured to drive the heater;
• a lamp voltage detection unit configured to detect a voltage between the anode and the cathode of the deuterium lamp;
• a lamp current detection unit configured to detect a current flowing between the anode and the cathode of the deuterium lamp;
• a heater voltage detection unit configured to detect a voltage applied to the heater;
• a heater current detection unit configured to detect a current flowing through the heater;
• a lamp lighting unit configured to perform an operation for lighting the deuterium lamp by controlling the lamp drive unit and the heater drive unit;
• an abnormality determination unit configured to determine, in a prescribed sequence, whether or not the voltage or the current detected by the lamp voltage detection unit, the lamp current detection unit, the heater voltage detection unit, and the heater current detection unit is abnormal, during the operation for lighting the deuterium lamp;
• and
• an abnormality cause identification unit configured to identify, in a case where the voltage or the current is determined to be abnormal by the abnormality determination unit, a cause of the abnormality, based on a timing at which the abnormality determination unit determines that the voltage or the current is abnormal.