Particulate matter sensor with a heater

Details Particulate matter sensor with a heater Particulate matter sensor with a heater

2011-08-16

2011-08-16

Warden, Jill (Department: 1773)

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

C422S083000, C422S094000, C073S023310, C073S028010

Reexamination Certificate

active

07998417

ABSTRACT:
An apparatus to detect particulate matter. The apparatus includes a sensor electrode, a shroud, and a heater. The electrode measures a chemical composition within an exhaust stream. The shroud surrounds at least a portion of the sensor electrode, exclusive of a distal end of the sensor electrode exposed to the exhaust stream. The shroud defines an air gap between the sensor electrode and the shroud and an opening toward the distal end of the sensor electrode. The heater is mounted relative to the sensor electrode. The heater burns off particulate matter in the air gap between the sensor electrode and the shroud.

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