The Digital gas flow meter helps in measuring and analyzing the gas streams with different gas compositions. The gas flow meters can be easily be maintained as it requires just replacement of cartridge at regular interval of a year thus maintaining the compliance of the meter. It helps in measuring the gas volumetrically. The digital screen allows getting an accurate and real-time measurement with high efficacy. The gas flow meter can detect up to 1ml/min to 500ml/min with least count of 0.1ml/min.