Air heater is mainly used to the required air flow from the initial temperature of air heated to the required temperature up to 850 ℃. Has been widely applied to aerospace and weapons industry, chemical industry and universities and many research and production laboratories. Automatic temperature control and is particularly suitable for high temperature and high flow test systems and accessories. Air heater used in wide range: can be any gas heating, produced by hot air drying without water, non-conductive, non-burning, no explosion, no chemical corrosion, clean, safe, reliable, fast heating the heated space (controllable).