A thermocouple element (10) for use in high-pressure, high temperature fluid applications having a cylindrical body portion (12) formed from a first metal and a cap (14) formed from a dissimilar metal. The cap is fused to the body such that the junction (18) forms an axial thermocouple junction. A plurality...http://www.google.de/patents/US4749415?utm_source=gb-gplus-sharePatent US4749415 - Fast response thermocouple element
