An analyzer apparatus (1) includes: an ionization unit (11) that ionizes molecules to analyze; a filter unit (13) that forms a field for selectively passing ions generated by the ionization unit; a detector unit (14) that detects ions that have passed through the filter unit; an ion drive circuitry (61) that electrically drives the ionization unit; a field drive circuitry (62) that electrically drives the filter unit; a control unit (22) that controls outputs of the ion drive circuitry and the field drive circuitry; a temperature detecting unit (27) that detects the temperature of the ion drive circuitry and the field drive circuitry; and a correction unit (22b) that corrects output settings of the ion drive circuitry and the field drive circuitry based on the temperature detected by the temperature detecting unit.
