Measuring, regulating, signalling, controlling, monitoring and security instruments, apparatus, fittings and systems, in particular in the fields of gas technology and industrial and household heating technology; gas meters, in particular positive displacement gas meters; gas/air regulating and safety systems, gas filters and filter inserts therefor; flame and gas/air mixture monitoring apparatus; apparatus for controlling gas or air volume flows, pressure regulators; burner and boiler controls; heating and air conditioning regulators and parts thereof; heating mixers; remote control apparatus; pressure and temperature sensors, thermostats, programs recorded on data carriers

Burners, in particular gas burners for industrial purposes; ignition devices and parts thereof for gas burners, in particular pilot burners, ignition transformers; sensing and spark electrodes, pressure switches for gas, air and flue gas; safety pilots and parts thereof, safety burners, gas and air chokes