To provide a device which is made compact and made light in weight, has a body mounted type, does not obstruct the action of a person to be measured, is usable over a long period of time, and is continuously usable for a long period of time without using consumables, while recording a perspiration phenomenon on a skin surface without using an air flow as before.

The device is the combination of: a temperature and humidity sensor; a shielding plate for obstructing the flow of moisture; and a case having moisture inflow/outflow hole area and volume for optimizing sensor sensitivity. By using the device, the perspiration phenomenon is recorded by automatically detecting and subtracting a baseline fluctuation from humidity change data.