Ion-mobility spectrometry sensor for NOx detection

Details Ion-mobility spectrometry sensor for NOx detection Ion-mobility spectrometry sensor for NOx detection

2005-11-29

2005-11-29

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S286000, C313S231410, C315S111210, C422S083000, C436S116000

Reexamination Certificate

active

06969851

ABSTRACT:
A sensor and detection methods are provided for detecting nitric oxides (NOx) in an exhaust gas based upon ion mobility spectrometry (IMS) technique. An ionization chamber having an interior electrically conductive shell receives exhaust gas. A spark electrode having a needle tip extends into the ionization chamber. A shutter grid is coupled between the ionization chamber and an ion drift tube. A substantially continuous spark discharge is established between the electrically conductive shell and the needle tip of the spark electrode for ionization of the exhaust gas. Negative NO2ions are kept inside the chamber by biasing the electrically conductive shell and the shutter grid at a negative voltage. Then a positive pulse is applied to the shutter grid to cause the shutter to open for negative NO2ions to exit into the ion drift tube. The IMS sensor is small-sized, low-cost, robust, and reliable.

REFERENCES:
patent: 2004/0126872 (2004-07-01), Miller et al.

Affiliated with

Also associated with

Rating

Ion-mobility spectrometry sensor for NOx detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ion-mobility spectrometry sensor for NOx detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion-mobility spectrometry sensor for NOx detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3507006