IRON CONSTANTAN - A combination of metals used in thermocouple, thermocouple wires, and thermocouple lead wires. The iron wire is positive. The constantan is the negative wire.
IRRADIATION - In insulations, the exposure of the material to high energy emissions for the purpose of favorably altering the molecular structure by cross-linking.
ISA - Abbreviation for Instrument Society of America.
ISO - Abbreviation for International Standards Organization.
ISO 9000 - An international quality assurance program.
