Patent ID: 6346179
Filing Date: 2002-02-12
Classification: G01N

Abstract:
A gas sensor comprising:a detection element having a front-end portion; a detection portion formed at the front-end portion of the detection element; and a protector that covers the detection portion; wherein said protector comprises a first portion having a first sidewall and a second portion having a second sidewall disposed outside said first portion, said first sidewall having an axial front end and a tapering portion, said tapering portion being formed from the axial front end of said first sidewall, said first portion having a front-end surface provided with a first gas outlet, said second portion having a front-end surface provided with a second gas outlet, and wherein at least one gas inlet is formed in the sidewall of said second portion opposite said tapering portion, and plural gas inlets are formed in the sidewall of said first portion.