Air curtain heater 3-500KW,high pressure,continuous workability,durable performance,precise temperature controlling. Air curtain heater I ... air as soon as the heater is switched on. Continuous PID/SSR(PID/SCR)controlling, digital display and setting ... furnace, oven, drying house, dry tunnel, PS drying plate Of printer, drying of sand casting, shrink wrapping machine, encapsulation machine, etc.6. The ...