Explosion - proof / Coal - mine - safety - approved mine - used thermal imagers are intrinsically safe infrared temperature - measuring and inspection devices specifically designed for environments with explosive gases such as gas and coal dust, like underground coal mines and metal mines. It strictly adheres to national explosion - proof standards and has obtained the MA Coal - mine - safety Certification and Ex ib I Mb Explosion - proof Certification. It is a core precision instrument for ensuring safe mine production, equipment maintenance and accident rescue.