... Ultransonic heat meter1,Adopting forging process for pipeline2,Forged brass or iron for material3,Ultransonic channel have no reflection ... ultransonic test chip,more accuracy.8,Convenience installation,horizonal or vertical installation,for optionIII Performance featuresFlow range1.5~3 ... -RLM(C) series metrological accuracy meet class 2 or class 3.The permissible error conform to related requirement ...