Universal Aerosol Generator
Model 7.811

This model has two pumps inside, one for the flow through a nebulizer (generating raw concentrated aerosol) and a second pump which provides dry air  (uses a Silica gel dryer) for optional diluting and drying of the raw aerosol.   Both flow rates can be controlled and switched on/off independent from each other with two switches and potentiometers on the front side of the instrument.

The dryer is located at the front side and can be removed for Silica gel regeneration or replaced by standard tubing in case no drying is necessary or wanted.   A flow meter allows monitoring of the dry air flow.

Up to six nebulizers can be stored inside the removable cover.  

Models 7.810/7.811 Aerosol Generators

Technical Specifications

Size range: 30 to >5000 nm Aerosol concentration: depends on spheres used Material: selectable particles Dilution system:  1:1 to 1:40 incorporated Aerosol concentration: variable  Power supply: 100 to 240 VAC/47 to 63 System control:  manualy  Cleaning system: integrated filter Mass: 11 kg

The following graphs show typical distributions of PSL (155 nm) and DEHS measured with a GRIMM #5.400 CPC (Condensation Particle Counter) and a #5.500 Classifier “Vienna”-Type DMA