| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas detection device capable of suppressing deterioration and malfunction of a gas sensor.SOLUTION: A gas detection sensor 1 includes: an inlet port 24; an outlet port 25; a gas sensor 8; a primary side shutter part 60; and a secondary side shutter part 61. A sample gas flows from the inlet port 24. The sample gas flowed from the inlet port 24 flows from the outlet port 25. The gas sensor 8 is arranged in a ventilation space for communicating the inlet port 24 and the outlet port 25 and detects a detection object composition contained in the sample gas. The primary side shutter part 60 closes the inlet port 24 in an opening and closing manner. The secondary side shutter part 61, interlocking with the primary side shutter part 60, closes the outlet port 25 when the primary side shutter part 60 closes the inlet port 24, and opens the outlet port 25 when the primary side shutter part 60 opens the inlet port 24.SELECTED DRAWING: Figure 4 |
