automatic lubrication, bi-directional, biogas, border metering station, calorific value measurement, custody transfer measurement, data communication, data logger, diaphragm gas meter, diaphragm meter, distribution station, energy measurement, flow computer, function extension unit, gas chromatograph, gas quality, gas quality analysis, governor, grid injection, high pressure regulator, industrial gas meter, industrial meter, industrial station, intelligent metering, laboratory gas meter, laboratory meter, low pressure regulator, medium pressure regulator, meter reading, metering solution, MID approval, natural gas flow meter, pressure regulation, quantometer, regulator, remote control,remote data transfer, remote monitoring, remote readout, rotary gas meter, rotor piston meter, smart metering, smart valve, station controller, station monitoring, temperature sensor, transmission station, turbine gas meter, turbine meter, ultrasonic gas meter, ultrasonic meter, volume corrector ...