Abstract: A temperature sensing device for monitoring high temperature exhaust gases of an internal combustion engine which includes a sensing element and a support for the sensing element including a mounting stem, and electrical connection means secured to the end of the mounting stem which is outside of the manifold. A gas seal connection between the sensing element and the supporting mounting stem is located at a point removed from the hostile operating environment within the manifold and the fit between the sensing element and the mounting stem is such that a slight freedom of movement is available at the portion of the mounting stem innermost of the manifold to thereby shift the point of highest stress to the gas seal and securing connection between the mounting stem and the sensing element.

Abstract: A surface thermocouple assembly including a metal sheath having thermocouple conductors extending therethrough in spaced relation from each other and from the sheath by electrical insulating material, an opening in the sheath wall at the hot junction end and through which the conductors are extended, a ceramic plug receiving the conductors and mounted in the opening, a fusion weld of the conductors outside the plug, and a V-shaped pad with a knife-shaped edge integrally formed at the junction end. The thermocouple is made from a length of sheathed thermocouple conductors by forming a keyhole slot at the junction end, removing the insulation around the conductors, bending the conductors through the opening of the keyhole slot, mounting a ceramic plug in place, fusion welding the ends of the conductors outside the plug to define the thermojunction, inserting a metal end plug at the junction end, welding closed the slot and the end plug in position, and building up a V-shaped welded pad at the hot junction end.

Abstract: A surface thermocouple assembly including a metal sheath having thermocouple conductors extending therethrough in spaced relation from each other and from the sheath by electrical insulating material, an opening in the sheath wall at the hot junction end and through which the conductors are extended, a ceramic plug receiving the conductors and mounted in the opening, a fusion weld of the conductors outside the plug, and a V-shaped pad with a knife-shaped edge integrally formed at the junction end. The thermocouple is made from a length of sheathed thermocouple conductors by forming a keyhole slot at the junction end, removing the insulation around the conductors, bending the conductors through the opening of the keyhole slot, mounting a ceramic plug in place, fusion welding the ends of the conductors outside the plug to define the thermojunction, inserting a metal end plug at the junction end, welding closed the slot and the end plug in position, and building up a V-shaped welded pad at the hot junction end.