E-Type industrial thermocouple has the highest thermal EMF among all. It's commonly used in large-scale fossil fuel and nuclear power plants. It has a greater resistance compared to other types of thermocouples, so its field of operation should be carefully considered. Product information, specification, scope, and visual presentation. Passed UL VW-1 Vertical fire test and multiple IEC tests, proven to be low smoke density, halogen free, and flame retardant.