... ,Ta,Platinum-iridium alloy,Stainless steel coating with tungsten carbideElectrode drawknife apparatusDN80~DN3000Connection flange materialCarbon ... 5 optionallySquare wave or pulse with 25ms pulse widthTransistor switch output with isolation protection,can absorb 250mA ... range,disconnect pulse small signalTransistor switch output with isolation protection,can absorb 250mA current and withstanding ...