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-rate:1.6M3/H, 2.5M3/H, 4M3/H;Measuring accuracy: B degree;operating ambient temprature: -10degree ~ 50 degree; ...