Katalüütgaasitajur koosneb kahest elemendist: detektorelemendist, mis sisaldab katalüütilist materjali ja on tundlik põlevate gaaside suhtes, ning kompensaatorelemendist, mis on inertne.
A catalytic gas sensor consist of two elements: a detector element which contains catalytic material and is sensitive to combustible gases, and a compensator element which is inert.