one nozzle,one flow meter,for one kind of oil. Flux range: (5~50)L/min Maximum accepted error: ?.3% The minimum measured: 5L ) Calculation range each time: Volume: 0~9999.99L Sum: 0~9999.99Yuan Accumulated calculation range Volume: 0~9999.99L Unit price range: Yuan/L Power supply: AC220V Rating Power: 750W Environmental Humidity: -20℃~+40℃ Relative Humidity:30%~90% Explosion Protected symbol:ExmdⅡAT3