Measuring, controlling, regulating, signalling, checking and monitoring apparatus and instruments, namely, gas chromatography apparatus, gas detectors for detecting the presence of gas, gas sensors for measuring gas concentration, gas sensing electrodes, leak detecting devices for water or gas in the nature of leak detectors, gas pressure indicating gauges, pressure sensors, flame detectors, thermal exhaust flow detectors, flue gas monitors, thermo-electric safety devices in the nature of safety shut-off switches, gas pressure regulators and switches, safety valves, electronic valves for controlling gas or water, electronic valves for the regulation of gas and air flow, air/gas ratio control regulators, gas supply control units, electronic burner controls in the nature of thermostats, heating controlling and regulation apparatus in the nature of thermostats and electrical controllers for heating appliances, and electronic, mechanical and electromechanical meters for measuring electric and thermal energy, gas and water; devices for the central control and switching of power consumption apparatus, namely, electronic controllers, valves and switches; solenoid valves

Heating apparatus, namely, heating installations, heating apparatus for solid, liquid or gaseous fuels for industrial purposes as well as powered by electricity, stoves for solid, liquid or gaseous fuel as well as powered with electricity, central heating boilers, combination boilers for central heating and for hot water preparation, water heaters, boilers, convection ovens, radiant heaters, heating coils being heating elements, air heaters, oil and gas burners, solid fuel burning stoves; burners for industrial furnaces for solid, liquid and gaseous fuels, pilot burners for solid, liquid and gaseous fuels; industrial furnaces

[ Engineering in the field of gas technology as well as in the fields of industrial and domestic heating technology ]