| 摘要 |
PROBLEM TO BE SOLVED: To provide a particle collector capable of measuring a temporal change of the number of particles and the like which are precipitated from a space only with one collection member.SOLUTION: A particle collector 10 includes a collection member 11 for capturing particles precipitated from a particle detection object space. A capturing surface 111 of the collection member 11 is covered with an upper case 13, and only a part of the collection surface 111 is exposed from an opening 135 of the upper case 13. Consequently, the particles in the particle detection object space are collected only in the area exposed from the opening 135 within the collection surface 111 of the collection member 11. Since the exposed area from the opening 135 of the collection surface 111 is switched over by the relative movement of the upper case 13 and the collection member 111, the particles are collected in a newly exposed area after the exposed area from the opening 135 of the collection surface 111 is switched over. |
