... Full straight-through design 304 stainless steel Encrust-preventing Ultrasonic Heat Meter 10years quality assurance Full straight-through design ... Header cover(433MHZ aneennas or infrared optoelectronic interfaces)2,Ultrasonic transducer 10,Locking cover3,Stainless steel cover 11, ... 66mmHeader ambient humidity <100%The technical data of uh ultrasonic heat meterNominal DIAMETER DN(mm) 50 65 80 100 ...