Novel gas density monitor capable of coping with complex external environment

The utility model belongs to the field of gas state monitoring, and particularly relates to the field of G01N9/00, in particular to a novel gas density monitor capable of coping with a complex external environment. The utility model provides a novel gas density monitor capable of coping with a complex external environment. The novel gas density monitor comprises a dial plate and a shell, the shell is of a cylinder structure with an opening in one end, the shape of the dial plate is matched with the shape of the opening of the shell, and the dial plate is of an integral structure. According to the utility model, the dial pointers indicate from outside to inside, the dial is a complete disc, the central part is free of a gap, and the inner surface of the dial is coated with a heat insulation coating. The central part of the dial plate has no gap, so that sunlight is prevented from directly irradiating the interior of the monitor in the use process, the influence of direct sunlight on a temperature sensing eleme