Compressors produce compressed air by compressing the air they absorb from the atmosphere. For this reason, some moisture, which varies depending on atmospheric conditions, is also absorbed by the compressor along with the air it absorbs. Since the amount of moisture the air can carry decreases as it reaches higher pressures, most of the absorbed moisture is expelled as condensate in the compressor intermediate stage(s), but ultimately the compressed air leaves the compressor nearly 100% saturated with moisture.

 

Humidity in the air coming out of the compressor, in gaseous form, can be harmful to pneumatic equipment and  At the slightest temperature drop, it can condense and reach pneumatic systems as liquid. The temperature at which the moisture in the compressed air condenses and becomes liquid is called dew temperature or dew point.  In order to prevent this moisture or condensate from damaging the pneumatic systems, it is removed from the system at various rates by equipment such as separator, filter and compressed air dryer. After these conditioning processes, the pressurized dew point of the compressed air, depending on the amount of moisture in it, is one of the indicators of the quality of the air, together with the amount of particles and oil it carries.

 

Humidity in compressed air not only has the physical and chemical effects of water such as corrosion or oxidation, corrosion, but also has the effect of creating an environment that increases microbiological growth. In order to protect any device or process that may be damaged by the moisture in the compressed air, humidity must be constantly measured and necessary precautions must be taken accordingly.  For these processes, CS Instruments humidity sensors and CS Instruments recording and information systems (chart recorders) that record, process and display the signals received from humidity sensors offer businesses a wide range of solutions.