About This High Accuracy Ultrasonic Transducer: Flow Meter: ±1.0%, Water Meter: ±2.0%, Flow Meter Repeatability: ±0%, Heat Meter Repeatability: ±0.5% Parameters: Max Flow Speed: 209.97 ft/s (64 m/s) with a velocity resolution of 0.003 ft/s (0.001 m/s), Fluid Temperature: 32°F to 320°F, Max Fluid Turbidity: 20,000 ppm Bidirectional Measurement: Ultrasonic Water Flow Meter measures both forward and reverse flow, providing comprehensive data on positive, negative, and net cumulative flow/heat Robust Protection: Water Flow Meter features two IP68 transducers and an IP65 host, offering excellent dust-proof, waterproof, anti-corrosion, and moisture-proof protection, along with a fault self-diagnosis function for durability and reliability LCD Display: Digital Water Liquid Flow Tester is equipped with a backlit LCD that clearly shows real-time flow rate, cumulative flow, and velocity, allowing for quick and easy monitoring Versatile Measurement Media: Digital Water Liquid Flow Tester is suitable for a wide range of conductive liquids, including water, wastewater, seawater, and oils, compatible with pipes of various materials, such as carbon steel, stainless steel, cast iron, cement, copper, PVC, and aluminum