Technical requirements: 1. Accuracy Class: B/A, the measuring accuracy class equal to electromechanical gas meterf+s 2.Automatic data memory ,keeping time fª10years, the service life of IC card >10 million times 3.Non-touch sampling , the accuracy class of controller >0.1% 4.Working voltage: 3V/4.5V/6V power consumption: Solid currentf_10¬ªA 5.Power source: With battery outside, users could exchange freely 6.Temperature range: -10f¦-40f¦,relative humidity not exceed 93%RH·+20f¦·¼ 7.Maximum working pressure: 30KPa 8.Gas pressure loss:
