E-mail address:      Password:         Register here   Forgot password?   Home > Reference Data ANSI/ISA Thermocouple Color Code Type Material Color Code Overall Jacket Extension Grade Positive Wire Negative Wire Positive Wire Negative Wire Extension Grade JX J Iron Constantan White Red Black Brown KX K Chromel Alumel Yellow Red Yellow Brown TX T Copper Constantan Blue Red Blue Brown EX E Chromel Constantan Purple Red Purple Brown RX, SX --- Copper Copper Alloy #11 Black Red Green N/A