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Echotel® Model 355 Two-Wire Non-Contact Ultrasonic Transmitter Model 355 is a loop-powered ultrasonic transmitter that performs liquid level, volume or open channel flow measurement. HART® communications are offered with a PACTware™ PC program for remote configuration and troubleshooting. Literature Instruction Manual   (903 KB) R82 Radar / 355 Ultrasonic Overview   (610 KB) More... Additional Tools:            Measurement Principle: Ultrasonic pulses are emitted from the transducer and the time required for the echo to reflect from the liquid surface and return to the transducer is measured. Features: PACTware PC program using HART Communications for remote configuration, advanced diagnostics, performance trending and troubleshooting Menu-driven 4-pushbutton, 2-line x 16 character LCD user interface False target rejection for identification of true echo from liquid surface Common tank shapes and 20-point custom table for volume measurement Resettable and non-resettable 7-digit flow totalizers Flume and weir curves for open channel flow measurement, in addition to a 20-point custom table and a generic discharge flow equation Applications: Water and wastewater Slurries Viscous fluids Fuel oils Acids Caustics Options: Kynar or polypropylene transducer Cast aluminum or Lexan® electronics housing HART communications Last Update: 9/14/2009