Temperature sensor that achieves a fast response in an exhaust gas environment

A method for forming a temperature sensor, comprising:

• providing a temperature sensing portion with a metal housing;
• configuring on a surface of said metal housing, a projection that improves a surface area of said surface for convection heat transfer thereof;
• and
• associating a temperature sensing element with said temperature sensing portion, wherein a potting is located within a gap formed between the temperature sensing element and said metal housing and joined with a ceramic tube, configured such that an outer surface of said ceramic tube comprises a plurality of grooves formed therein for ease of filling of said potting, for carrying a plurality of high temperature metal lead wires to and from said temperature sensing portion, thereby forming a temperature sensor utilized in an exhaust gas environment to measure temperature and improve a response time and accuracy of said temperature sensor due to an increase in said surface area for convection heat transfer, while also applicable to low temperature applications, wherein said temperatures sensing element comprises an RDT (Resistance Temperature Detector).