Patent ID: 8704162

Claim:
A mass spectrometer having an auto-tuning function for sequentially executing parameter adjustments for each part in accordance with a prescribed procedure, said mass spectrometer comprising: a tuning result storage part which stores past tuning results for at least each representative part respectively set for a plurality of blocks constituting said mass spectrometer; and a tuning target control part which executes tuning in a predetermined block order based on the receipt of an instruction to execute auto-tuning, wherein, for each block, said tuning target control part first performs tuning for a representative part of the block, compares the result with corresponding past tuning results stored in said tuning result storage part, and omits the tuning of each of the other parts of the block if both values fall within a prescribed range or executes tuning for each of the other parts of the block if both values are outside the prescribed range.