Inthispaper,animprovementofheatingmethodformeasuringwetnessoftheflowingwetsteamisdeveloped,thebasicprincipleoftheheatingmethodispresentedandthemathematicalmodelhasbeenbuiltforanalyzingthethermodynamicsproblemsduringtheprocessofheating,Moreover,aninstrumentformeasuringwetnessofwetsteamflowwasdesignedandmadeout.ThisinstumenthasbeenusedformeasuringwetnessofthewetsteamflowattheoutletofthenozzleriginThermalTurbineLaboratory,Xi'anJiaotongUniversity,Byanalyzingtherelativeerroroftheresult,itwasfoundthatthisinstrumenthasfairlyhighaccuracy,itcanbeusedastheprototypeofpracticalinstrumentandhasanimportantapplicablevalueinengineering.
