Features: 1) Ambient temperature: -40 ~ 55癈 2) Humidity: 30 ~ 90% 3) Max. flow: 50L/min 4) Accuracy: ?.3% 5) Repeating error:?0.15% 6) Inlet pressure:?54KPa 7) Outlet pressure:?0.3MPa 8) Power: 380V 50Hz (220V optional) 9) Noise:?80dB (A class) 10) Unit price range: 0.01~99.99 11) Single volume range: 0.01~9,999.99 12) Accumulative volume range: 0.01 ~ 9,999,999,999.99 13) Explosion proof certificate: CE001126 14) Explosion proof sign: EXDM II AT3