SPX FLOW, Inc.

Exhaust Assembly

If the wave guide is very tight, there is too little suppletion of dry air to the wave guide. Therefore Delair has developed two systems to prevent the disadvantages of this phenomenon. One of these is a bleeding system by means of an exhaust assembly. 

FEATURES

MOIST AIRWave guides are normally pressurized with dry air to prevent the disadvantages of moist air and condensate resulting in corrosion and loss of signal. Although the water vapour transmission of the windows of the wave guide is very low, a continuous diffusion of water molecules from the moist ambient air will diffuse through the window material.

EXHAUST ASSEMBLYIf the wave guide is very tight, there is too little suppletion of dry air to the wave guide. Therefore Delair has developed two systems to prevent the disadvantages of this phenomenon. One of these is a bleeding systemby means of an exhaust assembly. In case of application of an exhaust assembly a very small amount of air is continuously exhausted from the antenna to the atmosphere, so removing possibly introduced water vapour. Dry air is supplied by the dryer again.