PROBLEM TO BE SOLVED: To enhance the accuracy in setting of the sensitivity of a sensor part in a measuring device.SOLUTION: The measuring device includes: the sensor part 10 having a photoelectric conversion part 2 for outputting a signal including information about a measuring object and an amplifier 3 for amplifying the signal including the information about the measuring object and a sensitivity adjusting part 6 for detecting a difference between the maximum value and minimum value in a predetermined period of a sensor signal dx output from the sensor part 10 as an amplitude value to adjust the sensitivity of the sensor part 10 based on the ratio of an amplitude value occupying a predetermined allowable amplitude value.COPYRIGHT: (C)2012,JPO&INPIT【課題】計測装置におけるセンサー部の感度の設定の精度を高めること。【解決手段】計測装置は、計測対象の情報を含む信号を出力する光電変換部2と、計測対象の情報を含む信号を増幅する増幅器3と、を含むセンサー部10と、センサー部10から出力されるセンサー信号dxの、所定期間における最大値と最小値との差分を振幅値として検出し、振幅値が所定の許容振幅値に占める割合の程度に基づいて、センサー部10の感度を調整する感度調整部6と、を有する。【選択図】図1