... transducer for selection, measuring pipe size from DN15mm to DN6000mm,Online testing, high quality and low price Features Linearity: 0.5 ... is from DN15mm to DN6000mm Adopt low voltage, multi-pulse technology to improve accuracy, useful life and reliability. Powerful Recording Function ... clamp-on type transducer, pipe size from DN50-1000mm MITECH Online Ultrasonic Flowmeter