... technical parameters and characteristics: 1. JRB1.6, JRB2.5-type gas meter, the largest flow is 2.5m3 / h, the ... weight, corrosion resistance, easy to install. 4.adopting IC card, which can achieve the new management model " payment first ... gas volume, accumulated gas volume, valve status, battery status and many other parameters. 9. have the function of resisting illegal operation IC card gas meter ...