US 6,634,210 B1 · Particulate sensor system

Abstract

One embodiment of a particulate sensor system; comprises a first sensing electrode and a second sensing electrode in thermal and electrical communication with a heater wherein the first sensing electrode and the second sensing electrode are disposed on the same side of an electrode substrate. One embodiment of a method for operating a particulate sensor system comprises introducing a gas stream to a sensor; monitoring the resistance between the first sensing electrode and the second sensing electrode, and increasing the temperature of the sensor when the resistance is greater than or equal to a first selected level. One embodiment of a method for operating a filter system comprises exposing a sensor to a pre-selected number of self-regeneration cycles, and increasing the temperature of the filter system.

Claims10

Dependent claims

A particulate sensor system comprising:

a particulate sensor element comprising a non-ionically conductive substrate, a non-ionically conductive porous protective layer, a heater, a first sensing electrode, and a second sensing electrode;
said first and second sensing electrodes being in thermal and electrical communication with said heater;
said first and second sensing electrodes being disposed on the same side of said substrate;
and said porous protective layer disposed on said electrodes in a region of said electrodes that is sensing particles.

1 more element

Dependencies are inferred from the claim text.

Particulate sensor system

Life of this patent

Particulate sensor system

Life of this patent

Abstract

Claims10