Description: current value of the discrete output unit; Name: discrete value (output)
Description: 	actual value of the discrete output unit; Name: discrete output value
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed