To provide a perspiration amount measuring device of a simple structure capable of accurately and repetitively measuring a perspiration amount by easy operation and at low costs.SOLUTION: A perspiration amount measuring device includes a perspiration sensor device 18 which is closely attached to a part of a body of a subject for measuring a perspiration amount. The perspiration sensor device 18 includes a case part 24 with a storage space and an opening 34 being formed at a part of the case part 24 and communicating with the inside and the outside, through which moisture passes. An adsorbent 48 is provided, which is detachably put into the storage space of the case part 24 and covers the opening 34. A pair of electrodes 42 and 44 are provided, which is located in contact with the adsorbent 48 in the case part 24 for electrically measuring an amount of the moisture adsorbed by the adsorbent 48. The pair of the electrode 42 and 44 is connected to a measuring part body 14 for calculating the perspiration amount, and measure the perspiration amount by measuring and calculating an electric value between the pair of the electrodes 42 and 44. An annular convex part 36 is provided to a peripheral edge part outside the opening 34.SELECTED DRAWING: Figure 1【課題】簡単な構造で、容易な操作により、低コストで、正確に発汗量を繰り返し測定することができる発汗量測定装置を提供する。【解決手段】被験者の身体の一部に密着し発汗量を測定する発汗センサ装置１８を有し、発汗センサ装置１８は、収納スペースを有するケース部２４と、ケース部２４の一部に形成され内外に連通し水分が通過する開口部３４を備える。ケース部２４の収納スペースに着脱可能に入れられ開口部３４を覆う吸着材４８を備える。ケース部２４内で吸着材４８に接して位置し、吸着材４８が吸着した水分の量を電気的に測定するための一対の電極４２，４４を備える。一対の電極４２，４４は、発汗量を演算する測定部本体１４に接続され、一対の電極４２，４４間の電気的な値を測定し演算して発汗量を測定する。開口部３４の外側の周縁部に、環状の凸部３６を備える。【選択図】図１
