pulse gas meter 1, Double display 2, Pulse output 3, Aluminum shell or steel shell pulse gas meterApplications:1, Double display;2, Aluminum case ... or steel case;3, Application: natural gas, liquid petroleum gas and coal;4, One card one gas, prepaid function..Technical datas:Nominal flow ... :0.01M3Meter Design life:>=15 yearsStandard: GB/T6968-1977gas meter>. pulse gas meter