... following situation:Altitude: Max.1000m above sea level.1.Ambient Temperature:-10~+45°C (bare machine: -10~+50 °C ... suitable for flow,pressure,air ,temperature and other slow physical change of process control.Such as blower fan,water pump ... and hoisting for driving and speeding control of AC asynchronous motor. frequency inverter with vector control output frequency 0.00hz--600hz