9 Measuring, signalling, detecting, testing and inspecting apparatus and instruments, namely, pressure sensors, electric sensors, coolant-temperature sensors, oil level sensors, and gas sensors for measuring gas concentration; apparatus and instruments for recording, transmitting, reproducing or processing data; recorded and downloadable digital media, computer software, computers and computer peripheral devices for use in data processing and regulating turbocompressors; accumulators; electric regulation apparatus, namely, control valves for regulating the flow of gases and liquids for compressors for gases, in particular for use with electrically assisted compressors for gases, in particular turbocompressors, exhaust gas turbocompressors, high-performance turbocompressors, electrically assisted turbocompressors; regulation apparatus, namely, control valves for regulating the flow of gases and liquids for turbines, in particular for use with electric generators; regulation apparatus, namely, control valves for regulating the flow of gases and liquids for waste heat recovery systems; downloadable computer software for compressors for gases, in particular electrically assisted compressors for gases, in particular turbocompressors, exhaust gas turbocompressors, high-performance turbocompressors, electrically assisted turbocompressors; downloadable computer software for turbines, in particular with electric generators; downloadable computer software for waste heat recovery systems * ; all the aforementioned goods in this class only in connection with gas compressors, namely, turbo compressors, exhaust gas turbo compressors, high performance turbo compressors, electrically assisted turbo compressors *