9 Apparatus and instruments for measuring, analyzing, recording, controlling and regulating physical quantities, chemical properties, and industrial processes such as flowmeters, sensors, actuators, valves, transmitters for signals, temperature and/or pressure, positioners, converters, recorders, gas and liquid analyzers; water, gas, electricity and energy meters; computers, microprocessors; computer programs; cables, conductors, wires; transformers; switchgear, circuit breakers, contactors, plugs, sockets, surge arrestors; substation automation equipment and power system protective relays; reactive power compensators; electric capacitors, electric reactors, electric converters and inverters; semiconductor elements.