Patent ID: 7041969
Filing Date: 2006-05-09
Classification: G01N,H01J

Abstract:
1. An apparatus for selecting between a first ion inlet orifice and a second ion inlet orifice of a FAIMS device, comprising: a first electrode defining a first ion inlet orifice within a first portion thereof, and defining a second ion inlet orifice within a second portion thereof; a second electrode disposed in a spaced-apart relationship with the first electrode, a space between the first electrode and the second electrode defining a FAIMS analyzer region; at least a cover for selectably covering the first ion inlet orifice and the second ion inlet orifice, the at least a cover larger than either the first ion inlet orifice or the second ion inlet orifice and providing for uncovering of a substantial area about the first ion inlet orifice and the second ion inlet orifice; and, an actuator interface for being driven by an actuator and for moving the at least a cover from a first position in which the first ion inlet orifice is uncovered by the at least a cover and the second ion inlet orifice is covered by a first portion of the at least a cover, to a second other position in which the second ion inlet orifice is uncovered by the at least a cover and the first ion inlet orifice is covered by a second portion of the at least a cover.