Dispensing apparatus having improved dynamic range

Details Dispensing apparatus having improved dynamic range Dispensing apparatus having improved dynamic range

1997-07-23

1999-06-29

Le, Long V.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 81, 422103, 436 46, 436 54, 436180, 118683, 118305, 239368, 239369, 239371, 7386415, 7386424, 7386425, G01N 3510

Patent

active

059165243

ABSTRACT:
A method and apparatus for dispensing precise quantities of reagents is disclosed including a positive displacement syringe pump in series with a dispenser, such as an aerosol dispenser or solenoid valve dispenser. The pump is controlled by a stepper motor or the like to provide an incremental quantity or continuous flow of reagent to the dispenser. The pump and dispenser are operated in cooperation with one another such that the quantity and/or flow rate of liquid dispensed by the dispenser can be precisely metered substantially independently of the particular operating parameters of said dispenser to attain a desired flow rate, droplet size or mist quality, droplet frequency and/or droplet velocity.

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