1、 Salt fog

The influence of salt fog on the equipment of security monitoring system is mainly manifested in that its sediment dissolves in water (water adsorbed on and in the equipment), which will corrode components, materials and lines or change their performance under certain temperature conditions, resulting in the decrease of reliability and increase of failure rate of monitoring system equipment.

Salt fog is a kind of chlorine sol, which mainly occurs at sea and seaside. On land, it will also be caused by the wind blowing of salt and alkali or the evaporation of salt water. The influence range of salt fog is mainly about 400m away from the coast and about 150m high. Beyond this range, the impact will weaken rapidly. Indoors, the sedimentation of salt fog is only half that of outdoors. Therefore, the impact of salt fog will be reduced indoors and in the sealed cabin.

2、 Mold

Mold is a kind of fungus that forms fluffy, spider reticular or flocculent mycelium on the nutrient substrate. The reproduction of mold means that its spores germinate and grow under appropriate temperature / humidity, pH value and other conditions. The most suitable breeding temperature for mold is 20 ~ 30 ° C. the growth of mold also needs nutrients and air. The dust, sweat marks and oil on components can provide nutrition for it.

The growth of mold will directly destroy the materials used as its culture medium, such as cellulose, grease, rubber, leather, fatty ester, some coatings and some plastics, degrade the performance of the materials, reduce the surface insulation resistance and increase the electric leakage; Mold metabolites can also cause indirect corrosion to materials, including metal corrosion.

3、 Machinery
Mechanical environment mainly refers to the mechanical vibration, impact and other forms of mechanical force borne by the security monitoring system equipment during storage, transportation and use.