Correct option is A
Thermocouple cables are often used in environments with extreme temperatures and harsh conditions. The most common type of insulation provided for thermocouple cables is Mineral Insulated (MI). This type of insulation offers excellent protection against high temperatures, mechanical damage, and corrosive environments.
Mineral Insulated (MI) Thermocouples:
· Consist of thermocouple wires surrounded by magnesium oxide (MgO) powder.
· Enclosed in a metal sheath for durability and thermal protection.
· Ideal for use in high-temperature applications.
