Electronic process automation control systems components, namely, signal conditioning and communication devices for industrial process control; electrical controllers for temperature control in industrial process automation; circle chart event recorders; electrical controller accessories, namely, basic digital indicators, general-purpose temperature and process controllers, encompassing limit controllers, valve motor drive controllers, profile controllers, single loop temperature controllers, multi-loop temperature controllers, DIN rail mounted controllers, electronic front-to-panel temperature controllers, electronic behind-the-panel temperature controllers; analog and electronic and digital/electronic circle chart recorders; accessories to digital electrical controllers, namely, industrial process control software for use with electrical controllers; mechanical temperature controllers, namely, thermometers, thermostats, and thermocouples; mechanical temperature recorder appliances, namely, event recorders; valves for gaseous fluid control and throttling, namely, control valves for regulating the flow of gases