... strong pulse change, pressure disappears suddenly or vibration exists.It can show the average of gas pulse pressure and liquid pulse ... (vacuum) gaugeTechnical parameter: Construction Range (MPa)Accuracy % Connection A. Back,no flange 0-0.1,0.16,0.25,0.4 ... flange D. Back,no flange E. Bottom with front flange F. Bottom,no flange G. Bottom with back flange H. Back,no flange I. Bottom with front flange ...