Infrared sensor test fixture

The utility model discloses a test fixture of an infrared gas sensor, which adopts a non-contact full-surrounding airtight structure, upper and lower hinge type opening and closing and buckle locking, and can finish a ventilation test in a state that the infrared gas sensor is not deformed by external force. The jig is simple and reliable in airtight structure, small in replacement space required by a measurement air chamber, good in repeatability of measurement data, and convenient to install and replace a sensor. The jig is small in overall size and light in weight, and ventilation calibration of various use sites is facilitated. 本实用新型公开了一种红外气体传感器的测试治具，采用无接触全包围式气密结构，上下合页式开合，卡扣锁紧，能够在红外气体传感器不受外力形变的状态下，完成通气测试。治具气密结构简单可靠、测量气室需要置换空间小、测量数据重复性好、安装更换传感器方便。治具整体体积小，重量轻，方便各种使用现场的通气标定。