onlydifferenceisthatthesendingandreceivingprocessdonotoccurinthesametrans- ducer.Thisleadstoabettersignalquality.Thetransducersaremountedinparallelon thepipeatasmalldistance,seeFig.3.5.AmeasurementinTransitTimemodeisnot possiblewhenworkingwiththismeasurementarrangement. Fig.3.5:MeasurementarrangementintheNoiseTrekparalle...