... Main technical parameters and characteristics: 1. JRB1.6, JRB2.5-type gas meter, the largest flow is 2.5m3 / h, the ... achieve the new management model " payment first, then consume the gas" 5. circuit board adopt the national moisture protection technology, ... electronic display ensure the accuracy of gas meter. 8. LCD can display the gas volume, accumulated gas volume, valve status, battery status ...