Providing instantaneous and accumulated flow measurements, HTTP Portable Transit Time works on pipes larger than 1/2 in. dia to measure forward, reverse, and net total flow. Meter clamps directly to pipe and does not contact flowing liquid. Kit includes UltraLink Windows software, transducer set, 20 ft interconnection cable, one tube of acoustic couplant, mounting hardware, ac power converter, 12 Vdc converter, infrared adapter, and 4-20 mA interface cable.