Main technical parameters and characteristics: 1. JRB1.6, JRB2.5-type gas meter, the largest flow is 2.5m3 / h, the maximum working pressure of 10kPa. 2. requiremant: Natural gas quality should be consistent with the requirements of SY7514-88, coal gas quality should be consistent with the requirements of GB13612-92. 3. casting shell is made of aluminum alloy ,with a small size, light weight, corrosion resistance, easy to install. 4.adopting IC card, which can achieve the new management model " payment first, then consume the gas" 5. circuit board adopt the national moisture protection technology, which can be adapted in harsh environment. 6. Life expectancy is up to more than 10 years , which ensure a reliable power-off after the valve closed. 7. mechanical character display and electronic display ensure the accuracy of gas meter. 8. LCD can display the gas volume, accumulated gas volume, valve status, battery status and many other parameters. 9. have the function of resisting illegal operation