Harmful gas measuring alarm for cabin sampling

The utility model discloses a harmful gas measuring alarm for cabin sampling, which comprises a measuring part, a display alarm part and a power supply module, wherein the power supply module is used for supplying power to the measuring part and the display alarm part. The harmful gas measuring alarm is characterized in that the measuring part comprises a measuring control module, an analog signal conditioning module, a first wireless transmission module and multiple electrochemical sensors, the electrochemical sensors and the measuring control module are respectively connected with the analog signal conditioning module, the first wireless transmission module is electrically connected with the measuring control module, the display alarm part comprises a second wireless transmission module, a data processing module, a function input module, a display module and an alarm module, and the second wireless transmission module, the function input module, the display module and the alarm module are respectively electrically connected with the data processing module. The harmful gas measuring alarm for cabin sampling has the advantages that before workers enter a cabin, the measuring part is put into the cabin to measure the content or concentration of harmful gas firstly, then measuring results are displayed on the display module of the display alarm part, and when the concentration of harmful gas exceeds the standard, an alarm is given by the alarm module, so that a situation that the life and the health of the workers are damaged can be avoided.