Surplus item pulled from a working environment. The flowmeter does not include any cables and has not been tested. Unit may need to be calibrated and/or repaired prior to usage. The D902 Portable Ultrasonic Doppler Flowmeter measures solids-bearing or aerated liquids in metal or plastic pipe. Proprietary circuitry allows this instrument to operate with lower concentrations of suspended solids than any competitive Doppler flowmeter - expanding the instrument's range of applications and reliability. Clamp-on, non-invasive transducers permit the instrument to be installed in minutes without interrupting system pressure or flow. The watertight case contains a rechargeable battery that can operate the unit continuously for 8 hours. The D902 transmitter has a full keypad designed for simple field setup and application versatility. The two-line, backlit, alphanumeric display shows instantaneous flow rate and totalized flows in a variety of user selectable engineering units. Velocity 0.5 - 20 FPS [0.15 - 6.08 MPS] Outputs 4 - 20 mA, 600 ohms max., isolated Liquid Requirements 25 ppm of 30 micron size suspended solids or entrained gases(air) Transducer to Transmitter Distance 20 feet, retractable cord Pipe Sizes 1 - 120 inches