METROLOGICAL CHARACTERIZATION OF A CAPILLARY TYPE THERMAL MASS FLOWMETER (CTTMF) FOR NATURAL GAS METERING

Nowadays, smart static gas measurement technologies are available on the market and are used for metering natural gas consumption of final consumers. Both ultrasonic and thermal-mass flow metering technologies are considered today as “new electronic gas meters”. Such new digital meters require an adequate knowledge of the measurement principle in order to carry out correct calibration procedures. In other words, we are in the digital age of the gas measurement: digital meters require digital calibrations. The calibration procedures in use to calibrate a traditional (mechanical) “analogue” gas meter (such as a diaphragm meter or a rotary piston meter) are not fully adequate for the calibration of an electronic, digital meter.