| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable gas detector that allows for testing a test target sensor while minimizing the chances of non-target sensors being poisoned (or negatively affected in terms of detection capability) by a test target gas diffusing through filters.SOLUTION: A portable gas detector 1 includes; four sensors 51-54 for detecting different types of gas; a housing 4 having four openings 471-474 for individually bringing the four sensors 51-54 in communication with the outside; and four filters 441-444, each being disposed between one of the four sensors 51-54 and corresponding to one of the four openings 471-474.SELECTED DRAWING: Figure 3 |
