The DF-60810-MHVE Series Air Sampling Systems are designed for remote unattended continuous air sampling applications. The DF-60810-MHVE Series Air Samplers feature a brushless motor with electronic motor speed control that maintains a user selectable flow rate. The flow rate attainable through the filter media is dependent upon the air porosity of the filter media. Flow rate as high as 200 CFM (340 m3/hr) are attainable with glass fiber filter media. The DF-60810-MHVE Series design accommodates rapid field service and component replacement. The basic components of the system are assembled in a modular fashion so that each component can be readily and independently removed for service.