Physical apparatus as well as parts therefor, being optical weighing, measuring, signaling, checking, regulating and monitoring devices, apparatus and instruments, namely, emergency signal transmitters, temperature measuring apparatus not for medical purposes, temperature regulating instrument in the nature of temperature controllers for heating systems, thermo-hygrometers, flowmeters, gas meters, water level indicators, thermometers not for medical purposes, manometers, heat counters being remote sensors for use in measuring thermal energy waves, steam pressure meters, thermostats, all in the area of industrial process technology; pressure-and thermo regulators with electric switches for the remote control of automated industrial operations using pneumatic, hydraulic, electric and mixed signals and impulses; flow meters, fluidimeters in the nature of flow meters, gas counters, water level indicators, electrical transducers, thermometers not for medical purposes, manometers, low-water alarms; heat counters, steam meters, thermostats, safety thermostats, room thermostats, heat and temperature detectors, hygrostats in the nature of hygrometers; safety temperature limiting devices, reverse motion temperature limiting devices; differential pressure meters, flow meters and level meter for liquids; control units, namely, temperature control devices for HVAC equipment to ensure proper functioning, flow regulators for commercial use, and room temperature control devices; electric high-speed circuit breakers, pneumatic remote control for teleadjustment or distance control or teleautomatics of valves, throttles, blinds and other shut-off-, regulating-and monitoring equipment; electronic actuators and control gears for adjustment, control and switching of valves, cut-off valves and gate valves, controlling industrial equipment as well as pneumatic measuring and regulating devices being flow meters, control valves for regulating the flow of gases and liquids; controllers and regulators and their structural or replacement parts for the automation of industrial operations and equipment produced thereof by using pneumatic, hydraulic, electric or mixed signals and impulses; pneumatic, hydraulic, electric and mechanic switches, microcircuits and change-overs in the nature of electric and electronic circuits and change-over switches, calculators, main driving switches in the nature of electric switches, switch cupboards being switch boxes; apparatus for recording, data storage and reading of pneumatic, hydraulic and electric signals, data and measured value and other technical information, apparatus for input and output of digital or analogue physical quantity; digital to analog converters, digitizers, analogue current indicators, pneumatic measuring instruments for measuring resistance, control and regulating apparatus, namely, temperature regulators and for pneumatic control of automation of workflow for process engineering, production engineering and for machine tools, pneumatic keys and pneumatic switch keys, pneumatic drop signals; pneumatic binary indicators being signal processors and receivers, binary power amplifiers, power switches, count-up pulse counters, electronic signal transmitters; automatic pneumatic valves, control valves, three-way valves, electric relays, distributors in the nature of distribution transformers, chokes and fine chokes in the nature of automatic valves, differential pressure switches for monitoring, controlling and switching hydraulic or pneumatic systems and time lag relays; electronic universal regulators for rheostatic teletransmitters, electronic humidity regulators, electronic synchronization controllers for actuators; electrical display equipment in the nature of liquid crystal display monitors; set point setter being computer hardware for regulating industrial machinery; electric actuators and positioners being receivers of electric signals, electric differential pressure switches, pneumatic and electro-pneumatic components, namely, pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems, electric and pneumatic three-level sampled-data systems comprised of electric measuring transducers for pressure, differential pressure and temperature, pneumatic limiting signal transmitters, electrical regulating apparatus, namely field rheostats, measuring instruments and counting apparatus, namely, for measuring thermal energy waves and temperature, measuring and counting apparatus for machines, namely, pressure and temperature measuring apparatus; electronic heating and ventilation controllers and electronic temperature and differential temperature controllers; electrical or electronic apparatus for controlling the pressure and flow of gases, in particular for use in firing installations, boiler control instruments, district heating supply installations and for cooling motors