9 Manufacturing and industrial process control instruments and components, namely signal conditioners, signal transmitters, signal isolators, signal converters, temperature sensors, temperature transmitters, limit alarm trips, process controllers, process monitors, process back-up stations, loop monitors, loop interfaces, distributed i/o, remote i/o, fieldbus device couplers, i/p converters, p/i converters, ac power transducers, process indicators, power supplies, fieldbus power supplies, surge supressors, and instrument enclosures