10years quality assurance Full straight-through design 304 stainless steel Encrust-preventing Ultrasonic Heat Meter 10years quality assurance Full straight-through design 304 stainless steel Encrust-preventing Dual CPUAnti-lightning Low power consrmption 1,304overall flow pipe 9,Header cover(433MHZ aneennas or infrared optoelectronic interfaces)2,Ultrasonic transducer 10,Locking cover3,Stainless ...