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Purge Economizer Controls

Purge Economizer Controls is an energy & cost saving system. Reduces the volume of purged air required by ensuring your air dryer operates at a specified outlet dew point and maintains that dew point level within a close tolerance. Can be installed with all older and newer twin tower regenerative air dryer models (any manufacturer).




PLC control for all timing and operating functions

Precision hygrometer board
Highly visible LED display
-9 C(+15 F) to -40 C(-40 F) dew point range
Easily adjustable dew point set level
4-20 mA or 0-5VDC analogue output
Economical dew point sensor replacement (no calibration required)

HMI Screen
Tower Status Display for functions
User adjustable time settings
Password protected for changing presets
Total Operating Hours display
Purgeless hours display
Total cubic feet of air savings display

PEC Display Features
Continuous display
Tower status display
Total number of operating hours
Total number of “Purgeless” hours
Convertible to Fahrenheit or Celsius
Optional alarm flash indicators
Total number of cubic feet saved message
4-20 mA or 0-5VDC analog outputs for remote reading or recording (by others)

PEC Optional Features
Lower operating dew point ranges available
Optional high humidity alarm
Other alarms such as “Tower Switching Failure”, “Low Purge”, “Low Inlet” or “Outlet Pressure”, and “High Differential Pressure” may be added economically, using the PLC and HMI display


  • Desiccant dryers

Custom Options Available

1 year warranty included

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