... , beautiful appearance, high sensitivity,accurate measurement good G1.6 diaphragm gas meter, domestic gas meter in aluminium case, beautiful appearance, high sensitivity ... polyester powder plastic coating. G1.6, G2.5 aluminum case mechanical gas meters: SpecificationTechnical ParametersG1.6-IG2.5-I Normal Flow Rate ... Of AccuracyB GradeBasic Error LimitQ min≤Q<0.1Q max ±3% 0.1Q max≤Q≤Q max ±1.5%Pressure ...