Abstract: A heat flux temperature sensor probe includes a first mineral-insulated cable portion and a second mineral-insulated cable portion. The first mineral-insulated cable portion has a first metallic sheath, a first plurality of thermocouple conductors extending therein, and an inorganic insulative material insulating the first plurality of thermocouple conductors from one another and from the first metallic sheath. The second mineral-insulated cable portion has a second metallic sheath, a second plurality of thermocouple conductors extending therein, and an inorganic insulative material insulating the second plurality of thermocouple conductors from one another and from the second metallic sheath. A first thermocouple is formed between at least one of the first plurality of thermocouple conductors and one of the second plurality of thermocouple conductors proximate a first end of the second mineral-insulated cable portion.

Abstract: A temperature probe includes a mineral-insulated cable having a metallic outer sheath surrounding a mineral insulation therein. The mineral-insulated cable has a plurality of conductors running through the mineral insulation. A temperature sensitive element has a pair of lead wires. An insert has at least one conduit to receive the pair of lead wires of the temperature sensitive element. The insert also has a recess configured to receive the temperature sensitive element. An insert sheath is configured to slide over the insert and has a first end configured to couple to the metallic outer sheath of the mineral-insulated cable and a second end. An endcap is attached to the second end of the insert sheath. The insert is configured to urge the temperature sensitive element into contact with the endcap.