The ZB-KRQ-I combustible gas detector closed-loop high and low temperature, humid and hot test chamber is designed specifically for combustible gas detectors. It is developed in accordance with the requirements of GB15322.1-2019 "Industrial and Commercial Point type Combustible Gas Detectors", GB15322.2-2019 "Household Combustible Gas Detectors", and GB15322.3-2019 "Portable Combustible Gas Detectors for Industrial and Commercial Purposes", and has testing functions such as orientation, high-speed airflow, high temperature (operation) test, low temperature (operation) test, and constant humid and hot (operation) environment; The enclosure adopts a unique closed ring large enclosure, utilizing high-performance sensors and microcontrollers, efficient refrigeration and cooling, and other core technologies, with high measurement accuracy, good stability, and repeatability; The product adopts one click operation, which is easy to use and has industry-leading technology and performance.